Higher-rank names treated as synonyms in the Catalogue of Life: full list
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| IUCN name | Rank | CoL accepted name | CoL authority | CoL year | CoL entry | Group | IUCN taxa | Detail |
|---|---|---|---|---|---|---|---|---|
| UDEONYCHOPHORA | class | Onychophora | Grube, 1850 | 1850 | view | Other invertebrates: Velvet worms | 11 | Catalogue of Life treats this class name as a synonym of Onychophora. |
| SCORPAENIFORMES | order | Scorpaenoidei | view | Fish: Ray-finned fishes | 725 | Catalogue of Life treats this order name as a synonym of Scorpaenoidei. | ||
| BRASSICALES | order | Capparales | Juss. ex Bercht. & J.Presl | view | Plants: Dicotyledons | 693 | Catalogue of Life treats this order name as a synonym of Capparales. | |
| STEPHANOBERYCIFORMES | order | Stephanoberycoidei | view | Fish: Ray-finned fishes | 94 | Catalogue of Life treats this order name as a synonym of Stephanoberycoidei. | ||
| ALCYONACEA | order | Octocorallia | Haeckel, 1866 | 1866 | view | Corals | 48 | Catalogue of Life treats this order name as a synonym of Octocorallia. |
| CETOMIMIFORMES | order | Cetomimidae | Goode & Bean, 1895 | 1895 | view | Fish: Ray-finned fishes | 35 | Catalogue of Life treats this order name as a synonym of Cetomimidae. |
| GASTEROSTEIFORMES | order | Gasterosteoidei | view | Fish: Ray-finned fishes | 35 | Catalogue of Life treats this order name as a synonym of Gasterosteoidei. | ||
| SACCOPHARYNGIFORMES | order | Anguilliformes | view | Fish: Ray-finned fishes | 33 | Catalogue of Life treats this order name as a synonym of Anguilliformes. | ||
| LEPIDOSIRENIFORMES | order | Lepidosirenoidei | view | Fish: Lungfishes and coelacanths | 18 | Catalogue of Life treats this order name as a synonym of Lepidosirenoidei. | ||
| PENNATULACEA | order | Pennatuloidea | Ehrenberg, 1834 | 1834 | view | Corals | 18 | Catalogue of Life treats this order name as a synonym of Pennatuloidea. |
| LEIOTRICHIDAE | family | Leiothrichidae | Swainson, 1832 | 1832 | view | Birds | 139 | Catalogue of Life treats this family name as a synonym of Leiothrichidae. |
| CICINDELIDAE | family | Carabidae | Latreille, 1802 | 1802 | view | Insects: Beetles | 129 | Catalogue of Life treats this family name as a synonym of Carabidae. |
| HELMINTHOGLYPTIDAE | family | Helminthoglyptinae | Pilsbry, 1939 | 1939 | view | Molluscs: Gastropods | 41 | Catalogue of Life treats this family name as a synonym of Helminthoglyptinae. |
| ZIPHIIDAE | family | Hyperoodontidae | Gray, 1846 | 1846 | view | Mammals | 31 | Catalogue of Life treats this family name as a synonym of Hyperoodontidae. |
| INDOTYPHLIDAE | family | Grandisoniidae | Lescure, Renous & Gasc, 1986 | 1986 | view | Amphibians: Caecilians | 24 | Catalogue of Life treats this family name as a synonym of Grandisoniidae. |
| SUBULINIDAE | family | Subulininae | P. Fischer & Crosse, 1877 | 1877 | view | Molluscs: Gastropods | 23 | Catalogue of Life treats this family name as a synonym of Subulininae. |
| BRADYBAENIDAE | family | Helicoidei | view | Molluscs: Gastropods | 20 | Catalogue of Life treats this family name as a synonym of Helicoidei. | ||
| CANTHOCAMPTIDAE | family | Podoplea | Giesbrecht, 1882 | 1882 | view | Crustaceans: Copepods | 19 | Catalogue of Life treats this family name as a synonym of Podoplea. |
| CAPROMYIDAE | family | Echimyidae | Gray, 1825 | 1825 | view | Mammals: Rodents | 16 | Catalogue of Life treats this family name as a synonym of Echimyidae. |
| CENTRACANTHIDAE | family | Sparidae | Rafinesque, 1818 | 1818 | view | Fish: Ray-finned fishes | 15 | Catalogue of Life treats this family name as a synonym of Sparidae. |
| ALCIPPEIDAE | family | Leiothrichidae | Swainson, 1832 | 1832 | view | Birds | 7 | Catalogue of Life treats this family name as a synonym of Leiothrichidae. |
| EPHEMERACEAE | family | Pottiaceae | Hampe | view | Plants: Mosses | 7 | Catalogue of Life treats this family name as a synonym of Pottiaceae. | |
| SUNDASALANGIDAE | family | Ehiravidae | Deraniyagala, 1929 | 1929 | view | Fish: Ray-finned fishes | 7 | Catalogue of Life treats this family name as a synonym of Ehiravidae. |
| CINCLIDOTACEAE | family | Pottiaceae | Hampe | view | Plants: Mosses | 5 | Catalogue of Life treats this family name as a synonym of Pottiaceae. | |
| PILOTRICHACEAE | family | Neckeraceae | Schimp. | view | Plants: Mosses | 5 | Catalogue of Life treats this family name as a synonym of Neckeraceae. | |
| ALYCAEIDAE | family | Alycaeinae | W. T. Blanford, 1864 | 1864 | view | Molluscs: Gastropods | 4 | Catalogue of Life treats this family name as a synonym of Alycaeinae. |
| ANOTOPTERIDAE | family | Alepisauridae | Swainson, 1839 | 1839 | view | Fish: Ray-finned fishes | 4 | Catalogue of Life treats this family name as a synonym of Alepisauridae. |
| EXORMOTHECACEAE | family | Corsiniaceae | Ordway | view | Plants: Liverworts | 4 | Catalogue of Life treats this family name as a synonym of Corsiniaceae. | |
| LEPTOCHILICHTHYIDAE | family | Alepocephalidae | Bonaparte, 1846 | 1846 | view | Fish: Ray-finned fishes | 4 | Catalogue of Life treats this family name as a synonym of Alepocephalidae. |
| ANASPIDIDAE | family | Anaspidesidae | Ahyong & Alonso-Zarazaga, 2017 | 2017 | view | Crustaceans | 3 | Catalogue of Life treats this family name as a synonym of Anaspidesidae. |
| CHLAMYDEPHORIDAE | family | Chlamydephorinae | T. D. A. Cockerell, 1935 (1903) | 1935 | view | Molluscs: Gastropods | 3 | Catalogue of Life treats this family name as a synonym of Chlamydephorinae. |
| LABIIDAE | family | Spongiphoridae | Verhoeff, 1902 | 1902 | view | Insects | 3 | Catalogue of Life treats this family name as a synonym of Spongiphoridae. |
| LEPTODONTACEAE | family | Neckeraceae | Schimp. | view | Plants: Mosses | 3 | Catalogue of Life treats this family name as a synonym of Neckeraceae. | |
| ARTEDIDRACONIDAE | family | Artedidraconinae | Andriashev, 1967 | 1967 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this family name as a synonym of Artedidraconinae. |
| BOLYERIDAE | family | Bolyeriidae | Hoffstetter, 1946 | 1946 | view | Reptiles: Lizards and snakes | 2 | Catalogue of Life treats this family name as a synonym of Bolyeriidae. |
| CARCINIPHORIDAE | family | Anisolabididae | Verhoeff, 1902 | 1902 | view | Insects | 2 | Catalogue of Life treats this family name as a synonym of Anisolabididae. |
| DELAVAYELLACEAE | family | Jungermanniaceae | Chevall. | view | Plants: Liverworts | 2 | Catalogue of Life treats this family name as a synonym of Jungermanniaceae. | |
| JAMESONIELLACEAE | family | Adelanthaceae | Grolle | view | Plants: Liverworts | 2 | Catalogue of Life treats this family name as a synonym of Adelanthaceae. | |
| MYOCASTORIDAE | family | Echimyidae | Gray, 1825 | 1825 | view | Mammals: Rodents | 2 | Catalogue of Life treats this family name as a synonym of Echimyidae. |
| OMOSUDIDAE | family | Alepisauridae | Swainson, 1839 | 1839 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this family name as a synonym of Alepisauridae. |
| PARAMURICEIDAE | family | Acanthogorgiidae | Gray, 1859 | 1859 | view | Corals | 2 | Catalogue of Life treats this family name as a synonym of Acanthogorgiidae. |
| ACANTHOCOCCIDAE | family | Eriococcidae | Cockerell, 1899 | 1899 | view | Insects | 1 | Catalogue of Life treats this family name as a synonym of Eriococcidae. |
| BATHYSAUROIDIDAE | family | Bathysauridae | Fowler, 1944 | 1944 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this family name as a synonym of Bathysauridae. |
| CAMISIIDAE | family | Crotoniidae | Thorell, 1876 | 1876 | view | Arachnids | 1 | Catalogue of Life treats this family name as a synonym of Crotoniidae. |
| CHARINIDAE | family | Charontidae | Simon, 1892 | 1892 | view | Arachnids | 1 | Catalogue of Life treats this family name as a synonym of Charontidae. |
| CORILLIDAE | family | Corillinae | Pilsbry, 1905 | 1905 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this family name as a synonym of Corillinae. |
| DASYTIDAE | family | Melyridae | Leach, 1815 | 1815 | view | Insects: Beetles | 1 | Catalogue of Life treats this family name as a synonym of Melyridae. |
| GIETELLIDAE | family | Rhadalidae | J.L. LeConte, 1861 | 1861 | view | Insects: Beetles | 1 | Catalogue of Life treats this family name as a synonym of Rhadalidae. |
| ISOPHELLIIDAE | family | Andvakiidae | Danielssen, 1890 | 1890 | view | Corals | 1 | Catalogue of Life treats this family name as a synonym of Andvakiidae. |
| LIOCHELIDAE | family | Hemiscorpiidae | Pocock, 1893 | 1893 | view | Arachnids | 1 | Catalogue of Life treats this family name as a synonym of Hemiscorpiidae. |
| ONCOPODIDAE | family | Sandokanidae | Özdikmen & Kury, 2007 | 2007 | view | Arachnids | 1 | Catalogue of Life treats this family name as a synonym of Sandokanidae. |
| OXYMITRACEAE | family | Ricciaceae | Rchb. | view | Plants: Liverworts | 1 | Catalogue of Life treats this family name as a synonym of Ricciaceae. | |
| PARABEMBRIDAE | family | Bembridae | Kaup, 1873 | 1873 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this family name as a synonym of Bembridae. |
| PHYCOLEPIDOZIACEAE | family | Cephaloziellaceae | Douin & Schiffn. | view | Plants: Liverworts | 1 | Catalogue of Life treats this family name as a synonym of Cephaloziellaceae. | |
| PLECTROGENIDAE | family | Plectrogeniidae | Fowler, 1938 | 1938 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this family name as a synonym of Plectrogeniidae. |
| POLYPHAGIDAE | family | Corydiidae | Saussure, 1864 | 1864 | view | Insects | 1 | Catalogue of Life treats this family name as a synonym of Corydiidae. |
| SPLACHNOBRYACEAE | family | Pottiaceae | Hampe | view | Plants: Mosses | 1 | Catalogue of Life treats this family name as a synonym of Pottiaceae. | |
| TACCACEAE | family | Dioscoreaceae | R.Br. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this family name as a synonym of Dioscoreaceae. | |
| THYROPHORELLIDAE | family | Thyrophorellinae | Girard, 1895 | 1895 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this family name as a synonym of Thyrophorellinae. |
| TRIDENCHTHONIIDAE | family | Tridenchthoniinae | Balzan, 1892 | 1892 | view | Arachnids | 1 | Catalogue of Life treats this family name as a synonym of Tridenchthoniinae. |
| Leandra | genus | Miconia | Ruiz & Pav. | view | Plants: Dicotyledons | 37 | Catalogue of Life treats this genus name as a synonym of Miconia. | |
| Brachyalestes | genus | Alestes | Müller & Troschel, 1844 | 1844 | view | Fish: Ray-finned fishes | 26 | Catalogue of Life treats this genus name as a synonym of Alestes. |
| Conostegia | genus | Miconia | Ruiz & Pav. | view | Plants: Dicotyledons | 24 | Catalogue of Life treats this genus name as a synonym of Miconia. | |
| Neotamias | genus | Neotamias | A. H. Howell, 1929 | 1929 | view | Mammals: Rodents | 23 | Catalogue of Life treats this genus name as a synonym of Neotamias. |
| Espeletiopsis | genus | Espeletia | Mutis ex Humb. & Bonpl. | view | Plants: Dicotyledons | 19 | Catalogue of Life treats this genus name as a synonym of Espeletia. | |
| Papurana | genus | Hylarana | Tschudi, 1838 | 1838 | view | Amphibians: Frogs and toads | 19 | Catalogue of Life treats this genus name as a synonym of Hylarana. |
| Clidemia | genus | Miconia | Ruiz & Pav. | view | Plants: Dicotyledons | 18 | Catalogue of Life treats this genus name as a synonym of Miconia. | |
| Palaemonetes | genus | Palaemon | Weber, 1795 | 1795 | view | Crustaceans: Crabs, lobsters and shrimps | 18 | Catalogue of Life treats this genus name as a synonym of Palaemon. |
| Procordulia | genus | Hemicordulia | Selys, 1871 | 1871 | view | Insects: Dragonflies and damselflies | 18 | Catalogue of Life treats this genus name as a synonym of Hemicordulia. |
| Saintpaulia | genus | Streptocarpus | Lindl. | view | Plants: Dicotyledons | 18 | Catalogue of Life treats this genus name as a synonym of Streptocarpus. | |
| Herrania | genus | Theobroma | L. | view | Plants: Dicotyledons | 16 | Catalogue of Life treats this genus name as a synonym of Theobroma. | |
| Pulchrana | genus | Hylarana | Tschudi, 1838 | 1838 | view | Amphibians: Frogs and toads | 16 | Catalogue of Life treats this genus name as a synonym of Hylarana. |
| Pycreus | genus | Cyperus | L. | view | Plants: Monocotyledons | 16 | Catalogue of Life treats this genus name as a synonym of Cyperus. | |
| Oziothelphusa | genus | Potamon | Savigny, 1816 | 1816 | view | Crustaceans: Crabs, lobsters and shrimps | 15 | Catalogue of Life treats this genus name as a synonym of Potamon. |
| Solenandra | genus | Stenanthemum | Reissek | view | Plants: Dicotyledons | 15 | Catalogue of Life treats this genus name as a synonym of Stenanthemum. | |
| Corynopuntia | genus | Grusonia | F.Rchb. ex Britton & Rose | view | Plants: Dicotyledons | 14 | Catalogue of Life treats this genus name as a synonym of Grusonia. | |
| Kyllinga | genus | Cyperus | L. | view | Plants: Monocotyledons | 14 | Catalogue of Life treats this genus name as a synonym of Cyperus. | |
| Telchinia | genus | Acraea | Fabricius, 1807 | 1807 | view | Insects: Butterflies and moths | 14 | Catalogue of Life treats this genus name as a synonym of Acraea. |
| Brachiaria | genus | Urochloa | P.Beauv. | view | Plants: Monocotyledons | 13 | Catalogue of Life treats this genus name as a synonym of Urochloa. | |
| Glyptopetalum | genus | Euonymus | L. | view | Plants: Dicotyledons | 13 | Catalogue of Life treats this genus name as a synonym of Euonymus. | |
| Pepinia | genus | Pitcairnia | L'Hér. | view | Plants: Monocotyledons | 13 | Catalogue of Life treats this genus name as a synonym of Pitcairnia. | |
| Callistoctopus | genus | Pinnoctopus | A. d'Orbigny, 1845 | 1845 | view | Molluscs: Cephalopods | 12 | Catalogue of Life treats this genus name as a synonym of Pinnoctopus. |
| Cincloramphus | genus | Megalurus | Horsfield, 1821 | 1821 | view | Birds | 12 | Catalogue of Life treats this genus name as a synonym of Megalurus. |
| Hemigrammocharax | genus | Nannocharax | Günther, 1867 | 1867 | view | Fish: Ray-finned fishes | 12 | Catalogue of Life treats this genus name as a synonym of Nannocharax. |
| Amygdalus | genus | Heritiera | Dryand. | view | Plants: Dicotyledons | 11 | Catalogue of Life treats this genus name as a synonym of Heritiera. | |
| Calycorectes | genus | Eugenia | P.Micheli ex L. | view | Plants: Dicotyledons | 11 | Catalogue of Life treats this genus name as a synonym of Eugenia. | |
| Dendroseris | genus | Sonchus | L. | view | Plants: Dicotyledons | 11 | Catalogue of Life treats this genus name as a synonym of Sonchus. | |
| Dermanura | genus | Dermanura | Gervais, 1856 | 1856 | view | Mammals: Bats | 11 | Catalogue of Life treats this genus name as a synonym of Dermanura. |
| Ixobrychus | genus | Botaurus | Stephens, 1819 | 1819 | view | Birds | 11 | Catalogue of Life treats this genus name as a synonym of Botaurus. |
| Libanothamnus | genus | Espeletia | Mutis ex Humb. & Bonpl. | view | Plants: Dicotyledons | 11 | Catalogue of Life treats this genus name as a synonym of Espeletia. | |
| Pseudopiptadenia | genus | Pityrocarpa | (Benth. & Hook.f.) Britton & Rose | view | Plants: Dicotyledons | 11 | Catalogue of Life treats this genus name as a synonym of Pityrocarpa. | |
| Xenophyllum | genus | Werneria | Kunth | view | Plants: Dicotyledons | 11 | Catalogue of Life treats this genus name as a synonym of Werneria. | |
| Anoplopterus | genus | Amphilius | Günther, 1864 | 1864 | view | Fish: Ray-finned fishes | 10 | Catalogue of Life treats this genus name as a synonym of Amphilius. |
| Chalcorana | genus | Hylarana | Tschudi, 1838 | 1838 | view | Amphibians: Frogs and toads | 10 | Catalogue of Life treats this genus name as a synonym of Hylarana. |
| Epimyrma | genus | Temnothorax | Mayr, 1861 | 1861 | view | Insects: Bees, wasps and ants | 10 | Catalogue of Life treats this genus name as a synonym of Temnothorax. |
| Helmiopsis | genus | Eriolaena | DC. | view | Plants: Dicotyledons | 10 | Catalogue of Life treats this genus name as a synonym of Eriolaena. | |
| Muschampia | genus | Syrichtus | Boisduval, 1834 | 1834 | view | Insects: Butterflies and moths | 10 | Catalogue of Life treats this genus name as a synonym of Syrichtus. |
| Lasiommata | genus | Pararge | Hübner, 1819 | 1819 | view | Insects: Butterflies and moths | 9 | Catalogue of Life treats this genus name as a synonym of Pararge. |
| Musculium | genus | Sphaerium | Scopoli, 1777 | 1777 | view | Molluscs: Bivalves | 9 | Catalogue of Life treats this genus name as a synonym of Sphaerium. |
| Nannobrachium | genus | Lampanyctus | Bonaparte, 1840 | 1840 | view | Fish: Ray-finned fishes | 9 | Catalogue of Life treats this genus name as a synonym of Lampanyctus. |
| Ramphiculus | genus | Ptilinopus | Swainson, 1825 | 1825 | view | Birds | 9 | Catalogue of Life treats this genus name as a synonym of Ptilinopus. |
| Stenogyne | genus | Eriocephalus | L. | view | Plants: Dicotyledons | 9 | Catalogue of Life treats this genus name as a synonym of Eriocephalus. | |
| Allanblackia | genus | Garcinia | L. | view | Plants: Dicotyledons | 8 | Catalogue of Life treats this genus name as a synonym of Garcinia. | |
| Borneocola | genus | Scaphochlamys | Baker | view | Plants: Monocotyledons | 8 | Catalogue of Life treats this genus name as a synonym of Scaphochlamys. | |
| Chalepoxenus | genus | Temnothorax | Mayr, 1861 | 1861 | view | Insects: Bees, wasps and ants | 8 | Catalogue of Life treats this genus name as a synonym of Temnothorax. |
| Clethrionomys | genus | Myodes | Pallas, 1811 | 1811 | view | Mammals: Rodents | 8 | Catalogue of Life treats this genus name as a synonym of Myodes. |
| Dendrochilum | genus | Coelogyne | Lindl. | view | Plants: Monocotyledons | 8 | Catalogue of Life treats this genus name as a synonym of Coelogyne. | |
| Dyaphorophyia | genus | Platysteira | Jardine & Selby, 1830 | 1830 | view | Birds | 8 | Catalogue of Life treats this genus name as a synonym of Platysteira. |
| Lipocarpha | genus | Cyperus | L. | view | Plants: Monocotyledons | 8 | Catalogue of Life treats this genus name as a synonym of Cyperus. | |
| Neobuxbaumia | genus | Cephalocereus | Pfeiff. | view | Plants: Dicotyledons | 8 | Catalogue of Life treats this genus name as a synonym of Cephalocereus. | |
| Rohanixalus | genus | Feihyla | Frost, Grant, Faivovich, Bain, Haas, Haddad, de Sá, Channing, Wilkinson, Donnellan et al., 2006 | 2006 | view | Amphibians: Frogs and toads | 8 | Catalogue of Life treats this genus name as a synonym of Feihyla. |
| Xanthogramma | genus | Philhelius | Stephens, 1841 | 1841 | view | Insects: Flies | 8 | Catalogue of Life treats this genus name as a synonym of Philhelius. |
| Allosorus | genus | Aleuritopteris | Fée | view | Plants: Ferns | 7 | Catalogue of Life treats this genus name as a synonym of Aleuritopteris. | |
| Amitostigma | genus | Hemipilia | Lindl. | view | Plants: Monocotyledons | 7 | Catalogue of Life treats this genus name as a synonym of Hemipilia. | |
| Chazara | genus | Satyrus | Latreille, 1810 | 1810 | view | Insects: Butterflies and moths | 7 | Catalogue of Life treats this genus name as a synonym of Satyrus. |
| Craseomys | genus | Myodes | Pallas, 1811 | 1811 | view | Mammals: Rodents | 7 | Catalogue of Life treats this genus name as a synonym of Myodes. |
| Nannospalax | genus | Spalax | Guldenstaedt, 1770 | 1770 | view | Mammals: Rodents | 7 | Catalogue of Life treats this genus name as a synonym of Spalax. |
| Neurolepis | genus | Chusquea | Kunth | view | Plants: Monocotyledons | 7 | Catalogue of Life treats this genus name as a synonym of Chusquea. | |
| Anagallis | genus | Lysimachia | Tourn. ex L. | view | Plants: Dicotyledons | 6 | Catalogue of Life treats this genus name as a synonym of Lysimachia. | |
| Angostura | genus | Cusparia | Humb. | view | Plants: Dicotyledons | 6 | Catalogue of Life treats this genus name as a synonym of Cusparia. | |
| Cipocereus | genus | Cereus | Mill. | view | Plants: Dicotyledons | 6 | Catalogue of Life treats this genus name as a synonym of Cereus. | |
| Cryphiops | genus | Macrobrachium | Spence Bate, 1868 | 1868 | view | Crustaceans: Crabs, lobsters and shrimps | 6 | Catalogue of Life treats this genus name as a synonym of Macrobrachium. |
| Darwiniothamnus | genus | Erigeron | L. | view | Plants: Dicotyledons | 6 | Catalogue of Life treats this genus name as a synonym of Erigeron. | |
| Heteropoma | genus | Philopotamis | Layard, 1855 | 1855 | view | Molluscs: Gastropods | 6 | Catalogue of Life treats this genus name as a synonym of Philopotamis. |
| Madagasikara | genus | Pirena | Lamarck, 1816 | 1816 | view | Molluscs: Gastropods | 6 | Catalogue of Life treats this genus name as a synonym of Pirena. |
| Ossaea | genus | Miconia | Ruiz & Pav. | view | Plants: Dicotyledons | 6 | Catalogue of Life treats this genus name as a synonym of Miconia. | |
| Picrella | genus | Melicope | J.R.Forst. & G.Forst. | view | Plants: Dicotyledons | 6 | Catalogue of Life treats this genus name as a synonym of Melicope. | |
| Ascolepis | genus | Cyperus | L. | view | Plants: Monocotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Cyperus. | |
| Catharacta | genus | Stercorarius | Brisson, 1760 | 1760 | view | Birds | 5 | Catalogue of Life treats this genus name as a synonym of Stercorarius. |
| Doryichthys | genus | Microphis | Kaup, 1853 | 1853 | view | Fish: Ray-finned fishes | 5 | Catalogue of Life treats this genus name as a synonym of Microphis. |
| Elephantorrhiza | genus | Entada | Adans. | view | Plants: Dicotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Entada. | |
| Mezobromelia | genus | Cipuropsis | Ule | view | Plants: Monocotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Cipuropsis. | |
| Monochoria | genus | Pontederia | L. | view | Plants: Monocotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Pontederia. | |
| Nanozostera | genus | Zostera | L. | view | Plants: Monocotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Zostera. | |
| Nopalea | genus | Opuntia | Mill. | view | Plants: Dicotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Opuntia. | |
| Oxynaia | genus | Nodularia | Conrad, 1853 | 1853 | view | Molluscs: Bivalves | 5 | Catalogue of Life treats this genus name as a synonym of Nodularia. |
| Paspalidium | genus | Setaria | P.Beauv. | view | Plants: Monocotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Setaria. | |
| Pycnophyllopsis | genus | Stellaria | L. | view | Plants: Dicotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Stellaria. | |
| Teline | genus | Genista | L. | view | Plants: Dicotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Genista. | |
| Tunilla | genus | Airampoa | Frič | view | Plants: Dicotyledons | 5 | Catalogue of Life treats this genus name as a synonym of Airampoa. | |
| Aretiastrum | genus | Valeriana | L. | view | Plants: Dicotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Valeriana. | |
| Calochroa | genus | Cicindela | Linnaeus, 1758 | 1758 | view | Insects: Beetles | 4 | Catalogue of Life treats this genus name as a synonym of Cicindela. |
| Chloropetalia | genus | Chlorogomphus | Selys, 1854 | 1854 | view | Insects: Dragonflies and damselflies | 4 | Catalogue of Life treats this genus name as a synonym of Chlorogomphus. |
| Ciccaba | genus | Strix | Linnaeus, 1758 | 1758 | view | Birds | 4 | Catalogue of Life treats this genus name as a synonym of Strix. |
| Clepticus | genus | Bodianus | Bloch, 1790 | 1790 | view | Fish: Ray-finned fishes | 4 | Catalogue of Life treats this genus name as a synonym of Bodianus. |
| Doronomyrmex | genus | Leptothorax | Mayr, 1855 | 1855 | view | Insects: Bees, wasps and ants | 4 | Catalogue of Life treats this genus name as a synonym of Leptothorax. |
| Exopalaemon | genus | Palaemon | Weber, 1795 | 1795 | view | Crustaceans: Crabs, lobsters and shrimps | 4 | Catalogue of Life treats this genus name as a synonym of Palaemon. |
| Gastrorchis | genus | Calanthe | R.Br. | view | Plants: Monocotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Calanthe. | |
| Graodus | genus | Notropis | Rafinesque, 1818 | 1818 | view | Fish: Ray-finned fishes | 4 | Catalogue of Life treats this genus name as a synonym of Notropis. |
| Helmiopsiella | genus | Eriolaena | DC. | view | Plants: Dicotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Eriolaena. | |
| Heterozostera | genus | Zostera | L. | view | Plants: Monocotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Zostera. | |
| Humerana | genus | Hylarana | Tschudi, 1838 | 1838 | view | Amphibians: Frogs and toads | 4 | Catalogue of Life treats this genus name as a synonym of Hylarana. |
| Hylatomus | genus | Dryocopus | F. Boie, 1826 | 1826 | view | Birds | 4 | Catalogue of Life treats this genus name as a synonym of Dryocopus. |
| Joseanthus | genus | Critoniopsis | Sch.Bip. | view | Plants: Dicotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Critoniopsis. | |
| Kentiopsis | genus | Chambeyronia | Vieill. | view | Plants: Monocotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Chambeyronia. | |
| Lychnis | genus | Silene | L. | view | Plants: Dicotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Silene. | |
| Pennisetum | genus | Cenchrus | L. | view | Plants: Monocotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Cenchrus. | |
| Podospermum | genus | Scorzonera | L. | view | Plants: Dicotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Scorzonera. | |
| Protogoniomorpha | genus | Salamis | Boisduval, 1833 | 1833 | view | Insects: Butterflies and moths | 4 | Catalogue of Life treats this genus name as a synonym of Salamis. |
| Sibia | genus | Heterophasia | Blyth, 1842 | 1842 | view | Birds | 4 | Catalogue of Life treats this genus name as a synonym of Heterophasia. |
| Spartina | genus | Sporobolus | R.Br. | view | Plants: Monocotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Sporobolus. | |
| Sphaerostephanos | genus | view | Plants: Ferns | 4 | Catalogue of Life treats this genus name as a synonym. | |||
| Stangea | genus | Valeriana | L. | view | Plants: Dicotyledons | 4 | Catalogue of Life treats this genus name as a synonym of Valeriana. | |
| Uniandra | genus | Lens | C. T. Simpson, 1900 | 1900 | view | Molluscs: Bivalves | 4 | Catalogue of Life treats this genus name as a synonym of Lens. |
| Watanabeopetalia | genus | Chlorogomphus | Selys, 1854 | 1854 | view | Insects: Dragonflies and damselflies | 4 | Catalogue of Life treats this genus name as a synonym of Chlorogomphus. |
| Xenopoecilus | genus | Oryzias | Jordan & Snyder, 1906 | 1906 | view | Fish: Ray-finned fishes | 4 | Catalogue of Life treats this genus name as a synonym of Oryzias. |
| Adelocaryum | genus | Paracaryum | Boiss. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Paracaryum. | |
| Africanogyrus | genus | Hovorbis | D. S. Brown & Mandahl-Barth, 1973 | 1973 | view | Molluscs: Gastropods | 3 | Catalogue of Life treats this genus name as a synonym of Hovorbis. |
| Afrohybanthus | genus | Pigea | DC. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Pigea. | |
| Allocharopa | genus | Elsothera | Iredale, 1933 | 1933 | view | Molluscs: Gastropods | 3 | Catalogue of Life treats this genus name as a synonym of Elsothera. |
| Amblyopyrum | genus | Aegilops | L. | view | Plants: Monocotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Aegilops. | |
| Antherostele | genus | Urophyllum | Jack ex Wall. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Urophyllum. | |
| Anthropoides | genus | Grus | Brisson, 1760 | 1760 | view | Birds | 3 | Catalogue of Life treats this genus name as a synonym of Grus. |
| Apallaga | genus | Celaenorrhinus | Hübner, 1819 | 1819 | view | Insects: Butterflies and moths | 3 | Catalogue of Life treats this genus name as a synonym of Celaenorrhinus. |
| Austrotepuibasis | genus | Tepuibasis | De Marmels, 2007 | 2007 | view | Insects: Dragonflies and damselflies | 3 | Catalogue of Life treats this genus name as a synonym of Tepuibasis. |
| Barythelphusa | genus | Parathelphusa | H. Milne Edwards, 1854 | 1854 | view | Crustaceans: Crabs, lobsters and shrimps | 3 | Catalogue of Life treats this genus name as a synonym of Parathelphusa. |
| Bhutanthera | genus | Herminium | L. | view | Plants: Monocotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Herminium. | |
| Brayopsis | genus | Eudema | Humb. & Bonpl. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Eudema. | |
| Calyptranthes | genus | Myrcia | DC. ex Guill. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Myrcia. | |
| Carramboa | genus | Espeletia | Mutis ex Humb. & Bonpl. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Espeletia. | |
| Cheilocostus | genus | Hellenia | Retz. | view | Plants: Monocotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Hellenia. | |
| Chloroselas | genus | Aphnaeus | Hübner, 1819 | 1819 | view | Insects: Butterflies and moths | 3 | Catalogue of Life treats this genus name as a synonym of Aphnaeus. |
| Chrysoena | genus | Ptilinopus | Swainson, 1825 | 1825 | view | Birds | 3 | Catalogue of Life treats this genus name as a synonym of Ptilinopus. |
| Coelops | genus | Kriechbaumerella | Dalla Torre, 1897 | 1897 | view | Mammals: Bats | 3 | Catalogue of Life treats this genus name as a synonym of Kriechbaumerella. |
| Corythaixoides | genus | Crinifer | Jarocki, 1821 | 1821 | view | Birds | 3 | Catalogue of Life treats this genus name as a synonym of Crinifer. |
| Csapodya | genus | Deppea | Cham. & Schltdl. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Deppea. | |
| Cymbidiella | genus | Eulophia | R.Br. | view | Plants: Monocotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Eulophia. | |
| Decorana | genus | Incertana | Zeuner, 1941 | 1941 | view | Insects: Grasshoppers and crickets | 3 | Catalogue of Life treats this genus name as a synonym of Incertana. |
| Edithea | genus | Deppea | Cham. & Schltdl. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Deppea. | |
| Exsertotheca | genus | Rhystophyllum | (Müll. Hal.) Ehrh. ex E. Britton | view | Plants: Mosses | 3 | Catalogue of Life treats this genus name as a synonym of Rhystophyllum. | |
| Haplochorema | genus | Boesenbergia | Kuntze | view | Plants: Monocotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Boesenbergia. | |
| Inu | genus | Luciogobius | Gill, 1859 | 1859 | view | Fish: Ray-finned fishes | 3 | Catalogue of Life treats this genus name as a synonym of Luciogobius. |
| Ixidia | genus | Ixodia | Blyth, 1845 | 1845 | view | Birds | 3 | Catalogue of Life treats this genus name as a synonym of Ixodia. |
| Kupeornis | genus | Turdoides | Cretzschmar, 1826 | 1826 | view | Birds | 3 | Catalogue of Life treats this genus name as a synonym of Turdoides. |
| Lavoisiera | genus | Microlicia | D.Don | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Microlicia. | |
| Leptodea | genus | Potamilus | Rafinesque, 1818 | 1818 | view | Molluscs: Bivalves | 3 | Catalogue of Life treats this genus name as a synonym of Potamilus. |
| Lophanthera | genus | Parasopubia | H.-P.Hofm. & Eb.Fisch. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Parasopubia. | |
| Mascarenotus | genus | Otus | Pennant, 1769 | 1769 | view | Birds | 3 | Catalogue of Life treats this genus name as a synonym of Otus. |
| Melampias | genus | Erebia | Dalman, 1816 | 1816 | view | Insects: Butterflies and moths | 3 | Catalogue of Life treats this genus name as a synonym of Erebia. |
| Neisosperma | genus | Ochrosia | Juss. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Ochrosia. | |
| Neoptychocarpus | genus | Casearia | Jacq. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Casearia. | |
| Nototrichium | genus | Achyranthes | L. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Achyranthes. | |
| Pachycentria | genus | Medinilla | Gaudich. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Medinilla. | |
| Palaopartula | genus | Samoana | Pilsbry, 1909 | 1909 | view | Molluscs: Gastropods | 3 | Catalogue of Life treats this genus name as a synonym of Samoana. |
| Pararistolochia | genus | Aristolochia | L. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Aristolochia. | |
| Pholidota | genus | Coelogyne | Lindl. | view | Plants: Monocotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Coelogyne. | |
| Plesiatropha | genus | Mildbraedia | Pax | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Mildbraedia. | |
| Polycanthagyna | genus | Indaeschna | Fraser, 1926 | 1926 | view | Insects: Dragonflies and damselflies | 3 | Catalogue of Life treats this genus name as a synonym of Indaeschna. |
| Ponerorchis | genus | Hemipilia | Lindl. | view | Plants: Monocotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Hemipilia. | |
| Pseudoeugenia | genus | Syzygium | Gaertn. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Syzygium. | |
| Sarcocaulon | genus | Monsonia | L. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Monsonia. | |
| Sarcomelicope | genus | Melicope | J.R.Forst. & G.Forst. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Melicope. | |
| Scyphocephalium | genus | Scyphocephalum | Warb. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Scyphocephalum. | |
| Semicossyphus | genus | Bodianus | Bloch, 1790 | 1790 | view | Fish: Ray-finned fishes | 3 | Catalogue of Life treats this genus name as a synonym of Bodianus. |
| Simirestis | genus | Pristimera | Miers | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Pristimera. | |
| Sisymbrella | genus | Rorippa | Scop. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Rorippa. | |
| Stenocranius | genus | Microtus | Schrank, 1798 | 1798 | view | Mammals: Rodents | 3 | Catalogue of Life treats this genus name as a synonym of Microtus. |
| Teclea | genus | Vepris | Comm. ex A.Juss. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Vepris. | |
| Trachylaemus | genus | Trachyphonus | Ranzani, 1821 | 1821 | view | Birds | 3 | Catalogue of Life treats this genus name as a synonym of Trachyphonus. |
| Trembleya | genus | Microlicia | D.Don | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Microlicia. | |
| Triflorensia | genus | Tarenna | Gaertn. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Tarenna. | |
| Trochetiopsis | genus | Melhania | Forssk. | view | Plants: Dicotyledons | 3 | Catalogue of Life treats this genus name as a synonym of Melhania. | |
| Urkumayu | genus | Hoplisoma | Swainson, 1838 | 1838 | view | Fish: Ray-finned fishes | 3 | Catalogue of Life treats this genus name as a synonym of Hoplisoma. |
| Zygophlebia | genus | Enterosora | Baker | view | Plants: Ferns | 3 | Catalogue of Life treats this genus name as a synonym of Enterosora. | |
| Acantholebias | genus | Austrolebias | Costa, 1998 | 1998 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this genus name as a synonym of Austrolebias. |
| Acanthomyops | genus | Lasius | Fabricius, 1804 | 1804 | view | Insects: Bees, wasps and ants | 2 | Catalogue of Life treats this genus name as a synonym of Lasius. |
| Actinokentia | genus | Chambeyronia | Vieill. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Chambeyronia. | |
| Allopaa | genus | Nanorana | Günther, 1896 | 1896 | view | Amphibians: Frogs and toads | 2 | Catalogue of Life treats this genus name as a synonym of Nanorana. |
| Andersoniodoxa | genus | Spachea | A.Juss. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Spachea. | |
| Antilophia | genus | Chiroxiphia | Cabanis, 1847 | 1847 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Chiroxiphia. |
| Archiphysa | genus | Physella | Haldeman, 1842 | 1842 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Physella. |
| Arctophila | genus | Dupontia | R.Br. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Dupontia. | |
| Armeniaca | genus | Prunus | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Prunus. | |
| Aulandra | genus | Palaquium | Blanco | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Palaquium. | |
| Auriculodes | genus | Ellobium | Röding, 1798 | 1798 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Ellobium. |
| Baeodon | genus | Rhogeessa | H. Allen, 1866 | 1866 | view | Mammals: Bats | 2 | Catalogue of Life treats this genus name as a synonym of Rhogeessa. |
| Bleasdalea | genus | Gevuina | Molina | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Gevuina. | |
| Brachistus | genus | Witheringia | L'Hér. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Witheringia. | |
| Brachypleura | genus | Laiopteryx | Weber, 1913 | 1913 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this genus name as a synonym of Laiopteryx. |
| Brochoneura | genus | Cephalosphaera | Warb. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Cephalosphaera. | |
| Bubulcus | genus | Ardea | Linnaeus, 1758 | 1758 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Ardea. |
| Byrrhidium | genus | Elassocanthon | Kolbe, 1908 | 1908 | view | Insects: Beetles | 2 | Catalogue of Life treats this genus name as a synonym of Elassocanthon. |
| Callimachus | genus | Walvisteuthis | Nesis & Nikitina, 1986 | 1986 | view | Molluscs: Cephalopods | 2 | Catalogue of Life treats this genus name as a synonym of Walvisteuthis. |
| Calycogonium | genus | Miconia | Ruiz & Pav. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Miconia. | |
| Campyliadelphus | genus | Campylium | (Sull.) Spruce | view | Plants: Mosses | 2 | Catalogue of Life treats this genus name as a synonym of Campylium. | |
| Chionachne | genus | Polytoca | R.Br. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Polytoca. | |
| Cibinia | genus | Cibania | A. J. Wagner, 1914 | 1914 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Cibania. |
| Clypeorhagus | genus | Clyeorhagus | Olexa, 1975 | 1975 | view | Insects: Beetles | 2 | Catalogue of Life treats this genus name as a synonym of Clyeorhagus. |
| Comptonella | genus | Melicope | J.R.Forst. & G.Forst. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Melicope. | |
| Cribbia | genus | Rhipidoglossum | Schltr. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Rhipidoglossum. | |
| Critoniadelphus | genus | Critonia | P.Browne | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Critonia. | |
| Cyanocharax | genus | Diapoma | Cope, 1894 | 1894 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this genus name as a synonym of Diapoma. |
| Cysticus | genus | Cystiscus | W. Stimpson, 1865 | 1865 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Cystiscus. |
| Dendriopoterium | genus | Sanguisorba | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Sanguisorba. | |
| Dendrocereus | genus | Leptocereus | (A.Berger) Britton & Rose | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Leptocereus. | |
| Didymops | genus | Myiopharus | Brauer & Bergenstamm, 1889 | 1889 | view | Insects: Dragonflies and damselflies | 2 | Catalogue of Life treats this genus name as a synonym of Myiopharus. |
| Distylodon | genus | Triceratorhynchus | Summerh. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Triceratorhynchus. | |
| Enneatypus | genus | Ruprechtia | C.A.Mey. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Ruprechtia. | |
| Epithelphusa | genus | Ehecatusa | Ng & Low, 2010 | 2010 | view | Crustaceans: Crabs, lobsters and shrimps | 2 | Catalogue of Life treats this genus name as a synonym of Ehecatusa. |
| Euceraea | genus | Casearia | Jacq. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Casearia. | |
| Eudromias | genus | Charadrius | Linnaeus, 1758 | 1758 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Charadrius. |
| Eutamias | genus | Eutamias | Trouessart, 1880 | 1880 | view | Mammals: Rodents | 2 | Catalogue of Life treats this genus name as a synonym of Eutamias. |
| Euxerus | genus | Xerus | Hemprich & Ehrenberg, 1833 | 1833 | view | Mammals: Rodents | 2 | Catalogue of Life treats this genus name as a synonym of Xerus. |
| Faucherea | genus | Labourdonnaisia | Bojer | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Labourdonnaisia. | |
| Geosciurus | genus | Xerus | Hemprich & Ehrenberg, 1833 | 1833 | view | Mammals: Rodents | 2 | Catalogue of Life treats this genus name as a synonym of Xerus. |
| Ghatophryne | genus | Blaira | Dubois, Ohler & Pyron, 2021 | 2021 | view | Amphibians: Frogs and toads | 2 | Catalogue of Life treats this genus name as a synonym of Blaira. |
| Gyliotrachela | genus | Hypselostoma | W. H. Benson, 1856 | 1856 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Hypselostoma. |
| Gymnolebias | genus | Austrolebias | Costa, 1998 | 1998 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this genus name as a synonym of Austrolebias. |
| Haroldiella | genus | Pilea | Lindl. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Pilea. | |
| Hexalectris | genus | Bletia | Ruiz & Pav. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Bletia. | |
| Hypoxidia | genus | Curculigo | Gaertn. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Curculigo. | |
| Killipia | genus | Miconia | Ruiz & Pav. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Miconia. | |
| Kondakovia | genus | Moroteuthopsis | Pfeffer, 1908 | 1908 | view | Molluscs: Cephalopods | 2 | Catalogue of Life treats this genus name as a synonym of Moroteuthopsis. |
| Kyidris | genus | Strumigenys | Smith, 1860 | 1860 | view | Insects: Bees, wasps and ants | 2 | Catalogue of Life treats this genus name as a synonym of Strumigenys. |
| Landoltia | genus | Spirodela | Schleid. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Spirodela. | |
| Laplacea | genus | Gordonia | Ellis | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Gordonia. | |
| Lepilaena | genus | Althenia | F.Petit | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Althenia. | |
| Lithophila | genus | Gomphrena | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Gomphrena. | |
| Lopinga | genus | Pararge | Hübner, 1819 | 1819 | view | Insects: Butterflies and moths | 2 | Catalogue of Life treats this genus name as a synonym of Pararge. |
| Ludioctenus | genus | Tetrigus | Candèze, 1857 | 1857 | view | Insects: Beetles | 2 | Catalogue of Life treats this genus name as a synonym of Tetrigus. |
| Margelliantha | genus | Rhipidoglossum | Schltr. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Rhipidoglossum. | |
| Megaloprepia | genus | Ptilinopus | Swainson, 1825 | 1825 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Ptilinopus. |
| Meridolum | genus | Sauroconcha | W.-H. Zhang & Shea, 2008 | 2008 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Sauroconcha. |
| Mespilus | genus | Crataegus | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Crataegus. | |
| Metalepis | genus | Cynanchum | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Cynanchum. | |
| Metasepia | genus | Ascarosepion | Rochebrune, 1884 | 1884 | view | Molluscs: Cephalopods | 2 | Catalogue of Life treats this genus name as a synonym of Ascarosepion. |
| Microdontochromis | genus | Xenotilapia | Boulenger, 1899 | 1899 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this genus name as a synonym of Xenotilapia. |
| Micropyropsis | genus | Lolium | L. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Lolium. | |
| Mormolyca | genus | Maxillaria | Ruiz & Pav. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Maxillaria. | |
| Musophaga | genus | Tauraco | Kluk, 1779 | 1779 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Tauraco. |
| Nasuella | genus | Nasua | Storr, 1780 | 1780 | view | Mammals | 2 | Catalogue of Life treats this genus name as a synonym of Nasua. |
| Nemum | genus | Bulbostylis | Kunth | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Bulbostylis. | |
| Neocrex | genus | Mustelirallus | Bonaparte, 1856 | 1856 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Mustelirallus. |
| Neolysandra | genus | Polyommatus (Agrodiaetus) | Hübner, 1822 | 1822 | view | Insects: Butterflies and moths | 2 | Catalogue of Life treats this genus name as a synonym of Polyommatus (Agrodiaetus). |
| Neoschmidia | genus | Neoschmidea | T.G.Hartley | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Neoschmidea. | |
| Nordenstamia | genus | Gynoxys | Cass. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Gynoxys. | |
| Nystactes | genus | Heteroconger | Bleeker, 1868 | 1868 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Heteroconger. |
| Oeceoclades | genus | Eulophia | R.Br. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Eulophia. | |
| Oenotrichia | genus | Dennstaedtia | T.Moore | view | Plants: Ferns | 2 | Catalogue of Life treats this genus name as a synonym of Dennstaedtia. | |
| Orsinigobius | genus | Knipowitschia | Iljin, 1927 | 1927 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this genus name as a synonym of Knipowitschia. |
| Otholobium | genus | Psoralea | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Psoralea. | |
| Oxanthera | genus | Citrus | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Citrus. | |
| Padda | genus | Lonchura | Sykes, 1832 | 1832 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Lonchura. |
| Paraderris | genus | Derris | Lour. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Derris. | |
| Paradombeya | genus | Corchoropsis | Siebold & Zucc. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Corchoropsis. | |
| Parafossarulus | genus | Pseudovivipara | Annandale, 1918 | 1918 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Pseudovivipara. |
| Parasponia | genus | Trema | Lour. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Trema. | |
| Pareudiastes | genus | Gallinula | Brisson, 1760 | 1760 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Gallinula. |
| Pentarrhinum | genus | Cynanchum | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Cynanchum. | |
| Pernettya | genus | Gaultheria | Kalm ex L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Gaultheria. | |
| Phaeomyias | genus | Nesotriccus | C. H. Townsend, 1895 | 1895 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Nesotriccus. |
| Phaius | genus | Calanthe | R.Br. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Calanthe. | |
| Philodice | genus | Syngonanthus | Ruhland | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Syngonanthus. | |
| Pisum | genus | Pison | Jurine in Spinola, 1808 | 1808 | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Pison. |
| Placolobium | genus | Ormosia | Jacks. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Ormosia. | |
| Plutacia | genus | Cicindela | Linnaeus, 1758 | 1758 | view | Insects: Beetles | 2 | Catalogue of Life treats this genus name as a synonym of Cicindela. |
| Poemys | genus | Dendromus | A. Smith, 1829 | 1829 | view | Mammals: Rodents | 2 | Catalogue of Life treats this genus name as a synonym of Dendromus. |
| Praecereus | genus | Cereus | Mill. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Cereus. | |
| Prionitis | genus | Grateloupia | C.Agardh, 1822 | 1822 | view | Algae: Red algae | 2 | Catalogue of Life treats this genus name as a synonym of Grateloupia. |
| Probolodus | genus | Deuterodon | Eigenmann, 1907 | 1907 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this genus name as a synonym of Deuterodon. |
| Pselliophorus | genus | Atlapetes | Wagler, 1831 | 1831 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Atlapetes. |
| Pseudoacanthocereus | genus | Strophocactus | Britton & Rose | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Strophocactus. | |
| Psophocichla | genus | Turdus | Linnaeus, 1758 | 1758 | view | Birds | 2 | Catalogue of Life treats this genus name as a synonym of Turdus. |
| Rapanea | genus | Myrsine | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Myrsine. | |
| Rhachis | genus | Rachis | Albers, 1850 | 1850 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Rachis. |
| Rhodothyrsus | genus | Senefeldera | Mart. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Senefeldera. | |
| Rhoptromyrmex | genus | Tetramorium | Mayr, 1855 | 1855 | view | Insects: Bees, wasps and ants | 2 | Catalogue of Life treats this genus name as a synonym of Tetramorium. |
| Sarmentypnum | genus | Warnstorfia | Loeske | view | Plants: Mosses | 2 | Catalogue of Life treats this genus name as a synonym of Warnstorfia. | |
| Sauropus | genus | Breynia | J.R.Forst. & G.Forst. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Breynia. | |
| Scholleropsis | genus | Heteranthera | Ruiz & Pav. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Heteranthera. | |
| Sclerolobium | genus | Tachigali | Aubl. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Tachigali. | |
| Semotrachia | genus | Catellotrachia | Iredale, 1933 | 1933 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Catellotrachia. |
| Seychellaria | genus | Sciaphila | Blume | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Sciaphila. | |
| Sturanyella | genus | Sturanya | A. J. Wagner, 1905 | 1905 | view | Molluscs: Gastropods | 2 | Catalogue of Life treats this genus name as a synonym of Sturanya. |
| Tapiphyllum | genus | Vangueria | Comm. ex Juss. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Vangueria. | |
| Teleutomyrmex | genus | Tetramorium | Mayr, 1855 | 1855 | view | Insects: Bees, wasps and ants | 2 | Catalogue of Life treats this genus name as a synonym of Tetramorium. |
| Thornea | genus | Hypericum | L. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Hypericum. | |
| Tovomitopsis | genus | Chrysochlamys | Poepp. & Endl. | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Chrysochlamys. | |
| Triaenopogon | genus | Tridentiger | Gill, 1859 | 1859 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this genus name as a synonym of Tridentiger. |
| Urocricetus | genus | Cricetulus | Milne-Edwards, 1867 | 1867 | view | Mammals: Rodents | 2 | Catalogue of Life treats this genus name as a synonym of Cricetulus. |
| Vincentella | genus | Synsepalum | (A.DC.) Daniell | view | Plants: Dicotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Synsepalum. | |
| Vulpia | genus | Festuca | Tourn. ex L. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Festuca. | |
| Wallagonia | genus | Wallago | Bleeker, 1851 | 1851 | view | Fish: Ray-finned fishes | 2 | Catalogue of Life treats this genus name as a synonym of Wallago. |
| Zingeria | genus | Colpodium | Trin. | view | Plants: Monocotyledons | 2 | Catalogue of Life treats this genus name as a synonym of Colpodium. | |
| Acanthoptila | genus | Turdoides | Cretzschmar, 1826 | 1826 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Turdoides. |
| Achyropsis | genus | Achyranthes | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Achyranthes. | |
| Acnistus | genus | Iochroma | Benth. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Iochroma. | |
| Acostaea | genus | Mulleria | A. Férussac, 1824 | 1824 | view | Molluscs: Bivalves | 1 | Catalogue of Life treats this genus name as a synonym of Mulleria. |
| Acrolebias | genus | Austrolebias | Costa, 1998 | 1998 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Austrolebias. |
| Acrorumohra | genus | Dryopteris | Adans. | view | Plants: Ferns | 1 | Catalogue of Life treats this genus name as a synonym of Dryopteris. | |
| Acsmithia | genus | Spiraeanthemum | A.Gray | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Spiraeanthemum. | |
| Adolphoduckea | genus | Exostema | (Pers.) Rich. ex Humb. & Bonpl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Exostema. | |
| Aegopogon | genus | Muhlenbergia | Schreb. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Muhlenbergia. | |
| Aeropetes | genus | Meneris | Westwood, 1850 | 1850 | view | Insects: Butterflies and moths | 1 | Catalogue of Life treats this genus name as a synonym of Meneris. |
| Aflatunia | genus | Prunus | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Prunus. | |
| Agathothoma | genus | Agathotoma | Cossmann, 1899 | 1899 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Agathotoma. |
| Agraulis | genus | Dione (Agraulis) | Boisduval & Le Conte, 1835 | 1835 | view | Insects: Butterflies and moths | 1 | Catalogue of Life treats this genus name as a synonym of Dione (Agraulis). |
| Alinula | genus | Cyperus | L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Cyperus. | |
| Allochrusa | genus | Acanthophyllum | C.A.Mey. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Acanthophyllum. | |
| Amolinia | genus | Bartlettina | R.M.King & H.Rob. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Bartlettina. | |
| Amoora | genus | Aglaia | Lour. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Aglaia. | |
| Anatherostipa | genus | Lorenzochloa | Reeder & C.Reeder | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Lorenzochloa. | |
| Anchonium | genus | Sterigmostemum | M.Bieb. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Sterigmostemum. | |
| Androcorys | genus | Herminium | L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Herminium. | |
| Anemonoides | genus | Anemone | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Anemone. | |
| Anergates | genus | Tetramorium | Mayr, 1855 | 1855 | view | Insects: Bees, wasps and ants | 1 | Catalogue of Life treats this genus name as a synonym of Tetramorium. |
| Angadenia | genus | Pentalinon | Voigt | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Pentalinon. | |
| Angiola | genus | Hinea | J. E. Gray, 1847 | 1847 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Hinea. |
| Anisorus | genus | Stenocorus | Geoffroy, 1762 | 1762 | view | Insects: Beetles | 1 | Catalogue of Life treats this genus name as a synonym of Stenocorus. |
| Antichthonidris | genus | Monomorium | Mayr, 1855 | 1855 | view | Insects: Bees, wasps and ants | 1 | Catalogue of Life treats this genus name as a synonym of Monomorium. |
| Antipodarctus | genus | Crenarctus | Holthuis, 2002 | 2002 | view | Crustaceans: Crabs, lobsters and shrimps | 1 | Catalogue of Life treats this genus name as a synonym of Crenarctus. |
| Anurophasis | genus | Synoicus | Gould, 1843 | 1843 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Synoicus. |
| Aphyodite | genus | Hemigrammus | Gill, 1858 | 1858 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Hemigrammus. |
| Apistoloricaria | genus | Rhadinoloricaria | Isbrücker & Nijssen, 1974 | 1974 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Rhadinoloricaria. |
| Aplopelia | genus | Columba | Linnaeus, 1758 | 1758 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Columba. |
| Aposturisoma | genus | Farlowella | Eigenmann & Eigenmann, 1889 | 1889 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Farlowella. |
| Arconaia | genus | Lanceolaria | Conrad, 1853 | 1853 | view | Molluscs: Bivalves | 1 | Catalogue of Life treats this genus name as a synonym of Lanceolaria. |
| Argiodia | genus | Holothuria (Microthele) | Brandt, 1835 | 1835 | view | Other invertebrates: Sea cucumbers | 1 | Catalogue of Life treats this genus name as a synonym of Holothuria (Microthele). |
| Arotrura | genus | Scythris | Hübner, 1825 | 1825 | view | Insects: Butterflies and moths | 1 | Catalogue of Life treats this genus name as a synonym of Scythris. |
| Ascoglossum | genus | Renanthera | Lour. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Renanthera. | |
| Aspidium | genus | Tectaria | Cav. | view | Plants: Ferns | 1 | Catalogue of Life treats this genus name as a synonym of Tectaria. | |
| Atemnosiphon | genus | Lasiosiphon | Fresen. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Lasiosiphon. | |
| Awalycaeus | genus | Dicharax | Kobelt & von Möllendorff, 1900 | 1900 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Dicharax. |
| Bafutia | genus | Emilia | Cass. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Emilia. | |
| Balanocarpus | genus | Hopea | Roxb. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Hopea. | |
| Balgoya | genus | Moutabea | Aubl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Moutabea. | |
| Barbamine | genus | Barbarea | W.T.Aiton | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Barbarea. | |
| Bartholina | genus | Holothrix | Rich. ex Lindl. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Holothrix. | |
| Basiphyllaea | genus | Bletia | Ruiz & Pav. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Bletia. | |
| Belairia | genus | Pictetia | DC. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Pictetia. | |
| Bernardinia | genus | Rourea | Aubl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Rourea. | |
| Blutaparon | genus | Gomphrena | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Gomphrena. | |
| Boleum | genus | Vella | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Vella. | |
| Boniodendron | genus | Sinoradlkofera | F.G.Mey. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Sinoradlkofera. | |
| Borderea | genus | Dioscorea | Plum. ex L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Dioscorea. | |
| Boutiquea | genus | Neostenanthera | Exell | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Neostenanthera. | |
| Breidleria | genus | Stereodon | (Brid.) Brid. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Stereodon. | |
| Brewcaria | genus | Navia | Schult. & Schult.f. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Navia. | |
| Brinkmannella | genus | Brephostoma | Alcock, 1889 | 1889 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Brephostoma. |
| Bugeranus | genus | Grus | Brisson, 1760 | 1760 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Grus. |
| Bulimnaea | genus | Bulimnea | Haldeman, 1841 | 1841 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Bulimnea. |
| Bulleyia | genus | Coelogyne | Lindl. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Coelogyne. | |
| Burttdavya | genus | Nauclea | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Nauclea. | |
| Calaunia | genus | Aphananthe | Planch. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Aphananthe. | |
| Callibella | genus | Mico | Lesson, 1840 | 1840 | view | Mammals: Primates | 1 | Catalogue of Life treats this genus name as a synonym of Mico. |
| Calystegia | genus | Convolvulus | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Convolvulus. | |
| Canariothamnus | genus | Bethencourtia | Choisy | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Bethencourtia. | |
| Cardiandra | genus | Hydrangea | Gronov. ex L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Hydrangea. | |
| Caridinides | genus | Caridina | H. Milne Edwards, 1837 | 1837 | view | Crustaceans: Crabs, lobsters and shrimps | 1 | Catalogue of Life treats this genus name as a synonym of Caridina. |
| Carinurella | genus | Niphargus | Schiödte, 1849 | 1849 | view | Crustaceans | 1 | Catalogue of Life treats this genus name as a synonym of Niphargus. |
| Cataponera | genus | Turdus | Linnaeus, 1758 | 1758 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Turdus. |
| Centrostachys | genus | Cyathula | Blume | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Cyathula. | |
| Cephaelis | genus | Psychotria | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Psychotria. | |
| Ceramica | genus | Melanchra | Hübner, 1820 | 1820 | view | Insects: Butterflies and moths | 1 | Catalogue of Life treats this genus name as a synonym of Melanchra. |
| Cercidium | genus | Parkinsonia | Plum. ex L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Parkinsonia. | |
| Chaetocalyx | genus | Nissolia | Jacq. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Nissolia. | |
| Chimborazoa | genus | Serjania | Mill. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Serjania. | |
| Chlamydocarya | genus | Pyrenacantha | Wight | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Pyrenacantha. | |
| Chloebia | genus | Erythrura | Swainson, 1837 | 1837 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Erythrura. |
| Chondrosum | genus | Bouteloua | Lag. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Bouteloua. | |
| Chrysanthemoides | genus | Osteospermum | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Osteospermum. | |
| Chrysominla | genus | Actinodura | Gould, 1836 | 1836 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Actinodura. |
| Cicindelidia | genus | Cicindela | Linnaeus, 1758 | 1758 | view | Insects: Beetles | 1 | Catalogue of Life treats this genus name as a synonym of Cicindela. |
| Cincinna | genus | Valvata | O. F. Müller, 1773 | 1773 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Valvata. |
| Cipangocharax | genus | Dicharax | Kobelt & von Möllendorff, 1900 | 1900 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Dicharax. |
| Cladolejeunea | genus | Lejeunea | Lib. | view | Plants: Liverworts | 1 | Catalogue of Life treats this genus name as a synonym of Lejeunea. | |
| Cleistocarpidium | genus | Pleuridium | Rabenh. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Pleuridium. | |
| Clinostemon | genus | Mezilaurus | Kuntze ex Taub. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Mezilaurus. | |
| Cobalius | genus | Ochthebius | Leach, 1815 | 1815 | view | Insects: Beetles | 1 | Catalogue of Life treats this genus name as a synonym of Ochthebius. |
| Coelidium | genus | Amphithalea | Eckl. & Zeyh. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Amphithalea. | |
| Coelorachis | genus | Eremochloa | Buse | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Eremochloa. | |
| Coespeletia | genus | Espeletia | Mutis ex Humb. & Bonpl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Espeletia. | |
| Conniella | genus | Cirrhilabrus | Temminck & Schlegel, 1845 | 1845 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Cirrhilabrus. |
| Contectiana | genus | Viviparus | Montfort, 1810 | 1810 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Viviparus. |
| Coronopus | genus | Lepidium | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Lepidium. | |
| Coutarea | genus | Exostema | (Pers.) Rich. ex Humb. & Bonpl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Exostema. | |
| Coutierella | genus | Palaemon | Weber, 1795 | 1795 | view | Crustaceans: Crabs, lobsters and shrimps | 1 | Catalogue of Life treats this genus name as a synonym of Palaemon. |
| Criniferoides | genus | Crinifer | Jarocki, 1821 | 1821 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Crinifer. |
| Curanga | genus | Picria | Lour. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Picria. | |
| Cyanolimnas | genus | Mustelirallus | Bonaparte, 1856 | 1856 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Mustelirallus. |
| Cyathogyne | genus | Thecacoris | A.Juss. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Thecacoris. | |
| Cyathostemma | genus | Uvaria | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Uvaria. | |
| Cylindrotis | genus | Auriculastra | E. von Martens, 1880 | 1880 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Auriculastra. |
| Cylindrovertilla | genus | Vertigo | O. F. Müller, 1773 | 1773 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Vertigo. |
| Cymatophorina | genus | Cymatophorima | Spuler, 1908 | 1908 | view | Insects: Butterflies and moths | 1 | Catalogue of Life treats this genus name as a synonym of Cymatophorima. |
| Cypholebias | genus | Austrolebias | Costa, 1998 | 1998 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Austrolebias. |
| Cyphos | genus | Bucco | Brisson, 1760 | 1760 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Bucco. |
| Cystacanthus | genus | Phlogacanthus | Nees | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Phlogacanthus. | |
| Cystoathyrium | genus | Cystopteris | Bernh. | view | Plants: Ferns | 1 | Catalogue of Life treats this genus name as a synonym of Cystopteris. | |
| Daemonorops | genus | Calamus | L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Calamus. | |
| Dankia | genus | Camellia | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Camellia. | |
| Deinostigma | genus | Metapetrocosmea | W.T.Wang | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Metapetrocosmea. | |
| Deltarhynchus | genus | Ramphotrigon | G. R. Gray, 1855 | 1855 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Ramphotrigon. |
| Dicraeia | genus | Podostemum | Michx. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Podostemum. | |
| Digomphia | genus | Jacaranda | Juss. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Jacaranda. | |
| Dimorphocalyx | genus | Tritaxis | Baill. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Tritaxis. | |
| Dinoseris | genus | Hyaloseris | Griseb. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Hyaloseris. | |
| Diplandrorchis | genus | Neottia | Guett. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Neottia. | |
| Diplostomias | genus | Eustomias | Vaillant in Filhol, 1884 | 1884 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Eustomias. |
| Diproctacanthus | genus | Labropsis | Schmidt, 1931 | 1931 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Labropsis. |
| Doiichthys | genus | Nedystoma | Ogilby, 1898 | 1898 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Nedystoma. |
| Dorycnium | genus | Lotus | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Lotus. | |
| Dryotriorchis | genus | Circaetus | Vieillot, 1816 | 1816 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Circaetus. |
| Dutailliopsis | genus | Melicope | J.R.Forst. & G.Forst. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Melicope. | |
| Dutaillyea | genus | Melicope | J.R.Forst. & G.Forst. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Melicope. | |
| Eichhornia | genus | Pontederia | L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Pontederia. | |
| Elettariopsis | genus | Amomum | Roxb. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Amomum. | |
| Eleutherostylis | genus | Grewia | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Grewia. | |
| Eogonatus | genus | Gonatopsis | M. Sasaki, 1920 | 1920 | view | Molluscs: Cephalopods | 1 | Catalogue of Life treats this genus name as a synonym of Gonatopsis. |
| Eopleurozia | genus | Pleurozia | Dumort. | view | Plants: Liverworts | 1 | Catalogue of Life treats this genus name as a synonym of Pleurozia. | |
| Epigeneium | genus | Dendrobium | Sw. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Dendrobium. | |
| Eridiphas | genus | Hypsiglena | Cope, 1860 | 1860 | view | Reptiles: Lizards and snakes | 1 | Catalogue of Life treats this genus name as a synonym of Hypsiglena. |
| Erjaveciella | genus | Fusulus | Fitzinger, 1833 | 1833 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Fusulus. |
| Estevesia | genus | Harrisia | Britton | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Harrisia. | |
| Eulophiella | genus | Eulophia | R.Br. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Eulophia. | |
| Eurochelidon | genus | Pseudochelidon | Hartlaub, 1861 | 1861 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Pseudochelidon. |
| Everistia | genus | Psydrax | Gaertn. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Psydrax. | |
| Evonymopsis | genus | Brexiella | H.Perrier | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Brexiella. | |
| Eximacris | genus | Spharagemon | Scudder, 1875 | 1875 | view | Insects: Grasshoppers and crickets | 1 | Catalogue of Life treats this genus name as a synonym of Spharagemon. |
| Eximiorhagada | genus | Glyptorhagada | Pilsbry, 1890 | 1890 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Glyptorhagada. |
| Fagara | genus | Zanthoxylum | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Zanthoxylum. | |
| Forsteria | genus | Breynia | J.R.Forst. & G.Forst. | view | Crustaceans: Crabs, lobsters and shrimps | 1 | Catalogue of Life treats this genus name as a synonym of Breynia. | |
| Frateromys | genus | Bunomys | Thomas, 1910 | 1910 | view | Mammals: Rodents | 1 | Catalogue of Life treats this genus name as a synonym of Bunomys. |
| Gamanthera | genus | Licaria | Aubl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Licaria. | |
| Genyorchis | genus | Bulbophyllum | Thouars | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Bulbophyllum. | |
| Geodorum | genus | Eulophia | R.Br. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Eulophia. | |
| Gesnouinia | genus | Parietaria | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Parietaria. | |
| Grabowskia | genus | Lycium | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Lycium. | |
| Grandiphyllum | genus | Trichocentrum | Poepp. & Endl. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Trichocentrum. | |
| Graphania | genus | Ichneutica | Meyrick, 1887 | 1887 | view | Insects: Butterflies and moths | 1 | Catalogue of Life treats this genus name as a synonym of Ichneutica. |
| Haitia | genus | Ginoria | Jacq. | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Ginoria. | |
| Haloragodendron | genus | Glischrocaryon | Endl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Glischrocaryon. | |
| Hanabusaya | genus | Adenophora | Fisch. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Adenophora. | |
| Harma | genus | Elasmia | Möschler, 1886 | 1886 | view | Insects: Butterflies and moths | 1 | Catalogue of Life treats this genus name as a synonym of Elasmia. |
| Helicteropsis | genus | Hibiscus | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Hibiscus. | |
| Hemisteptia | genus | Saussurea | DC. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Saussurea. | |
| Holarctias | genus | Scopula | Schrank, 1802 | 1802 | view | Insects: Butterflies and moths | 1 | Catalogue of Life treats this genus name as a synonym of Scopula. |
| Horovitzia | genus | Carica | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Carica. | |
| Hybosema | genus | Gliricidia | Kunth | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Gliricidia. | |
| Hydrobryopsis | genus | Zeylanidium | (Tul.) Engl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Zeylanidium. | |
| Hydrotarsus | genus | Hydroporus | Clairville, 1806 | 1806 | view | Insects: Beetles | 1 | Catalogue of Life treats this genus name as a synonym of Hydroporus. |
| Iteadaphne | genus | Litsea | Lam. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Litsea. | |
| Ivesia | genus | Potentilla | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Potentilla. | |
| Kalidiopsis | genus | Kalidium | Moq. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Kalidium. | |
| Klugiodendron | genus | Jupunba | Britton & Rose | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Jupunba. | |
| Kobresia | genus | Carex | L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Carex. | |
| Koyamacalia | genus | Parasenecio | W.W.Sm. & Small | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Parasenecio. | |
| Kraenzlinella | genus | Acianthera | Scheidw. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Acianthera. | |
| Kuhlhasseltia | genus | Odontochilus | Blume | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Odontochilus. | |
| Kutikina | genus | Austropeplea | Cotton, 1942 | 1942 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Austropeplea. |
| Labatia | genus | Ilex | L.L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Ilex. | |
| Labigastromyzon | genus | Pseudogastromyzon | Nichols, 1925 | 1925 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Pseudogastromyzon. |
| Lamprachaenium | genus | Phyllocephalum | Blume | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Phyllocephalum. | |
| Larabicus | genus | Labroides | Bleeker, 1851 | 1851 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Labroides. |
| Lavatera | genus | Malva | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Malva. | |
| Lecythoconcha | genus | Margarya | G. Nevill, 1877 | 1877 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Margarya. |
| Ledum | genus | Rhododendron | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Rhododendron. | |
| Lembotropis | genus | Cytisus | Desf. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Cytisus. | |
| Lemuropisum | genus | Delonix | Raf. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Delonix. | |
| Lepidogrammus | genus | Dasylophus | Swainson, 1837 | 1837 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Dasylophus. |
| Leptophascum | genus | Chenia | R.H. Zander | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Chenia. | |
| Leptoteratura | genus | Meloimorpha | Walker, 1870 | 1870 | view | Insects: Grasshoppers and crickets | 1 | Catalogue of Life treats this genus name as a synonym of Meloimorpha. |
| Lerautia | genus | Coscinia | Hübner, 1819 | 1819 | view | Insects: Butterflies and moths | 1 | Catalogue of Life treats this genus name as a synonym of Coscinia. |
| Lereschia | genus | Cryptotaenia | DC. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Cryptotaenia. | |
| Leucopoa | genus | Festuca | Tourn. ex L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Festuca. | |
| Leuzea | genus | Rhaponticum | Vaill. ex Ludw. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Rhaponticum. | |
| Lexingtonia | genus | Fusconaia | C. T. Simpson, 1900 | 1900 | view | Molluscs: Bivalves | 1 | Catalogue of Life treats this genus name as a synonym of Fusconaia. |
| Ligeophila | genus | Microchilus | C.Presl | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Microchilus. | |
| Lindbergella | genus | Poa | L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Poa. | |
| Lipopterichthys | genus | Chaetostoma | Tschudi, 1846 | 1846 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Chaetostoma. |
| Litosanthes | genus | Lasianthus | Jack | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Lasianthus. | |
| Loeskypnum | genus | Warnstorfia | Loeske | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Warnstorfia. | |
| Lowryanthus | genus | Apodocephala | Baker | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Apodocephala. | |
| Macraea | genus | Viviania | Cav. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Viviania. | |
| Macrochlamys | genus | Gigantopecten | Rovereto, 1899 | 1899 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Gigantopecten. |
| Maieta | genus | Miconia | Ruiz & Pav. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Miconia. | |
| Mamillariella | genus | Lindbergia | Kindb. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Lindbergia. | |
| Mandenovia | genus | Trigonosciadium | Boiss. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Trigonosciadium. | |
| Manucerthia | genus | Loxops | Cabanis, 1847 | 1847 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Loxops. |
| Mathewsoconcha | genus | Advena | Gude, 1913 | 1913 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Advena. |
| Mayodendron | genus | Radermachera | Zoll. & Moritzi | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Radermachera. | |
| Megaleranthis | genus | Trollius | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Trollius. | |
| Meiostemon | genus | Combretum | Loefl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Combretum. | |
| Meizotropis | genus | Butea | Roxb. ex Willd. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Butea. | |
| Metazalmoxis | genus | Zalmoxis | Sørensen, 1886 | 1886 | view | Arachnids | 1 | Catalogue of Life treats this genus name as a synonym of Zalmoxis. |
| Micrandropsis | genus | Micrandra | Benth. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Micrandra. | |
| Micropygia | genus | Rufirallus | Bonaparte, 1856 | 1856 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Rufirallus. |
| Mienisiella | genus | Islamia | Radoman, 1973 | 1973 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Islamia. |
| Miyamayomena | genus | Aster | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Aster. | |
| Monizia | genus | Daucus | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Daucus. | |
| Monopetalanthus | genus | Aphanocalyx | Oliv. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Aphanocalyx. | |
| Mortoniellus | genus | Lipotactes | Brunner von Wattenwyl, 1898 | 1898 | view | Insects: Grasshoppers and crickets | 1 | Catalogue of Life treats this genus name as a synonym of Lipotactes. |
| Mweruella | genus | Prisodontopsis | Tomlin, 1928 | 1928 | view | Molluscs: Bivalves | 1 | Catalogue of Life treats this genus name as a synonym of Prisodontopsis. |
| Myginda | genus | Crossopetalum | P.Browne | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Crossopetalum. | |
| Myriocolea | genus | Colura | (Dumort.) Dumort. | view | Plants: Liverworts | 1 | Catalogue of Life treats this genus name as a synonym of Colura. | |
| Mysorella | genus | Gabbia | Tryon, 1865 | 1865 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Gabbia. |
| Nantis | genus | Bryconamericus | Eigenmann, 1907 | 1907 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Bryconamericus. |
| Napoleon | genus | Paedocoris | Miller, 1952 | 1952 | view | Insects | 1 | Catalogue of Life treats this genus name as a synonym of Paedocoris. |
| Narduroides | genus | Festuca | Tourn. ex L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Festuca. | |
| Nastanthus | genus | Gamocarpha | DC. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Gamocarpha. | |
| Neetroplus | genus | Hypsophrys | Agassiz, 1859 | 1859 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Hypsophrys. |
| Nelabrichthys | genus | Suezichthys | Smith, 1958 | 1958 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Suezichthys. |
| Neobeckia | genus | Rorippa | Scop. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Rorippa. | |
| Neobenthamia | genus | Polystachya | Hook. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Polystachya. | |
| Neocheiropteris | genus | Lepisorus | (J.Sm.) Ching | view | Plants: Ferns | 1 | Catalogue of Life treats this genus name as a synonym of Lepisorus. | |
| Neohierax | genus | Polihierax | Kaup, 1847 | 1847 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Polihierax. |
| Neoophorus | genus | Allotoca | Hubbs & Turner, 1939 | 1939 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Allotoca. |
| Neophaedusa | genus | Megalophaedusa | O. Boettger, 1877 | 1877 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Megalophaedusa. |
| Neopicrorhiza | genus | Picrorhiza | Royle ex Benth. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Picrorhiza. | |
| Nesasio | genus | Asio | Brisson, 1760 | 1760 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Asio. |
| Nesocrambe | genus | Hemicrambe | Webb | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Hemicrambe. | |
| Nesoluma | genus | Sideroxylon | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Sideroxylon. | |
| Nesotragus | genus | Neotragus | C. H. Smith, 1827 | 1827 | view | Mammals | 1 | Catalogue of Life treats this genus name as a synonym of Neotragus. |
| Nilgirianthus | genus | Strobilanthes | Blume | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Strobilanthes. | |
| Niphargellus | genus | Niphargus | Schiödte, 1849 | 1849 | view | Crustaceans | 1 | Catalogue of Life treats this genus name as a synonym of Niphargus. |
| Niphargobates | genus | Niphargus | Schiödte, 1849 | 1849 | view | Crustaceans | 1 | Catalogue of Life treats this genus name as a synonym of Niphargus. |
| Niphargobatoides | genus | Niphargus | Schiödte, 1849 | 1849 | view | Crustaceans | 1 | Catalogue of Life treats this genus name as a synonym of Niphargus. |
| Nothomyrcia | genus | Myrceugenia | O.Berg | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Myrceugenia. | |
| Notonia | genus | Neonotonia | J.A.Lackey | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Neonotonia. | |
| Nouelia | genus | Leucomeris | D.Don | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Leucomeris. | |
| Nyctophila | genus | Nyctophila | E. Olivier, 1884 | 1884 | view | Insects: Beetles | 1 | Catalogue of Life treats this genus name as a synonym of Nyctophila. |
| Ochyraea | genus | Platyhypnum | Loeske | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Platyhypnum. | |
| Oninia | genus | Asterophrys | Tschudi, 1838 | 1838 | view | Amphibians: Frogs and toads | 1 | Catalogue of Life treats this genus name as a synonym of Asterophrys. |
| Ophellantha | genus | Acidocroton | Griseb. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Acidocroton. | |
| Opizia | genus | Capsella | Medik. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Capsella. | |
| Oreorhamnus | genus | Frangula | Mill. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Frangula. | |
| Oreoweisia | genus | Cynodontium | Bruch & Schimp. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Cynodontium. | |
| Ornithidium | genus | Maxillaria | Ruiz & Pav. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Maxillaria. | |
| Orthodontopsis | genus | Orthodontium | Schwägr. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Orthodontium. | |
| Ossiculum | genus | Calyptrochilum | Kraenzl. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Calyptrochilum. | |
| Oxyjulis | genus | Halichoeres | Rüppell, 1835 | 1835 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Halichoeres. |
| Pachythamnus | genus | Ageratina | O.Hoffm. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Ageratina. | |
| Pagameopsis | genus | Pagamea | Aubl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Pagamea. | |
| Paloa | genus | Odonteleotris | Gill, 1863 | 1863 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Odonteleotris. |
| Pandiaka | genus | Cyathula | Blume | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Cyathula. | |
| Panisea | genus | Coelogyne | Lindl. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Coelogyne. | |
| Paracitharus | genus | Citharoides | Hubbs, 1915 | 1915 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Citharoides. |
| Paraelona | genus | Bithynia | Leach, 1818 | 1818 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Bithynia. |
| Parajulis | genus | Leptojulis | Bleeker, 1862 | 1862 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Leptojulis. |
| Parallelodera | genus | Tenebroides | Piller & Mitterpacher, 1783 | 1783 | view | Insects: Beetles | 1 | Catalogue of Life treats this genus name as a synonym of Tenebroides. |
| Paramelhania | genus | Melhania | Forssk. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Melhania. | |
| Parameria | genus | Urceola | Roxb. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Urceola. | |
| Paramiflos | genus | Espeletia | Mutis ex Humb. & Bonpl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Espeletia. | |
| Paranocaracris | genus | Nocaracris | Uvarov, 1928 | 1928 | view | Insects: Grasshoppers and crickets | 1 | Catalogue of Life treats this genus name as a synonym of Nocaracris. |
| Parastriga | genus | Harveya | Hook. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Harveya. | |
| Paratheba | genus | Monacha | Fitzinger, 1833 | 1833 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Monacha. |
| Pedilochilus | genus | Bulbophyllum | Thouars | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Bulbophyllum. | |
| Perssoniella | genus | Schistochila | Dumort. | view | Plants: Liverworts | 1 | Catalogue of Life treats this genus name as a synonym of Schistochila. | |
| Petromarula | genus | Phyteuma | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Phyteuma. | |
| Phaiomys | genus | Neodon | Hodgson, 1849 | 1849 | view | Mammals: Rodents | 1 | Catalogue of Life treats this genus name as a synonym of Neodon. |
| Phigys | genus | Vini | R. Lesson, 1833 | 1833 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Vini. |
| Physcomitrella | genus | Physcomitrium | (Brid.) Brid. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Physcomitrium. | |
| Physcomitridium | genus | Physcomitrium | (Brid.) Brid. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Physcomitrium. | |
| Physoceras | genus | Cynorkis | Thouars | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Cynorkis. | |
| Physoplexis | genus | Phyteuma | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Phyteuma. | |
| Pilsbrycharopa | genus | Corinomala | Iredale, 1939 | 1939 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Corinomala. |
| Pityphyllum | genus | Maxillaria | Ruiz & Pav. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Maxillaria. | |
| Platyhypnidium | genus | Platyhypnum | Loeske | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Platyhypnum. | |
| Platythelys | genus | Microchilus | C.Presl | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Microchilus. | |
| Plenogemma | genus | Bryomyces | Miq. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Bryomyces. | |
| Polioxolmis | genus | Cnemarchus | Ridgway, 1905 | 1905 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Cnemarchus. |
| Polylophium | genus | Laser | Borkh. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Laser. | |
| Potoxylon | genus | Eusideroxylon | Teijsm. & Binn. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Eusideroxylon. | |
| Pouzarella | genus | Entoloma | P.Kumm., 1871 | 1871 | view | Fungi: Mushrooms | 1 | Catalogue of Life treats this genus name as a synonym of Entoloma. |
| Povedadaphne | genus | Ocotea | Aubl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Ocotea. | |
| Prostherapis | genus | Colostethus | Cope, 1866 | 1866 | view | Amphibians: Frogs and toads | 1 | Catalogue of Life treats this genus name as a synonym of Colostethus. |
| Protomognathus | genus | Temnothorax | Mayr, 1861 | 1861 | view | Insects: Bees, wasps and ants | 1 | Catalogue of Life treats this genus name as a synonym of Temnothorax. |
| Pseudalthenia | genus | Zannichellia | P.Micheli ex L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Zannichellia. | |
| Pseudanamomis | genus | Eugenia | P.Micheli ex L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Eugenia. | |
| Pseudarrhenatherum | genus | Arrhenatherum | P.Beauv. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Arrhenatherum. | |
| Pseudephemerum | genus | Pleuridium | Rabenh. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Pleuridium. | |
| Pseudobenedictia | genus | Benedictia | W. Dybowski, 1875 | 1875 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Benedictia. |
| Pseudopachystela | genus | Synsepalum | (A.DC.) Daniell | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Synsepalum. | |
| Pseudosclerochloa | genus | Puccinellia | Parl. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Puccinellia. | |
| Pseudoscops | genus | Asio | Brisson, 1760 | 1760 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Asio. |
| Pseudosenefeldera | genus | Senefeldera | Mart. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Senefeldera. | |
| Pseudosetipinna | genus | Setipinna | Swainson, 1839 | 1839 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Setipinna. |
| Pseudosindora | genus | Copaifera | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Copaifera. | |
| Pternoscirtus | genus | Conipoda | Saussure, 1884 | 1884 | view | Insects: Grasshoppers and crickets | 1 | Catalogue of Life treats this genus name as a synonym of Conipoda. |
| Pteromonnina | genus | Monnina | Ruiz & Pav. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Monnina. | |
| Pubistylus | genus | Diplospora | DC. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Diplospora. | |
| Punotia | genus | Austrocylindropuntia | Backeb. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Austrocylindropuntia. | |
| Pyrrhurus | genus | Phyllastrephus | Swainson, 1832 | 1832 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Phyllastrephus. |
| Pyrroglaux | genus | Otus | Pennant, 1769 | 1769 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Otus. |
| Queenslandiella | genus | Cyperus | L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Cyperus. | |
| Radiogrammitis | genus | Oreogrammitis | Copel. | view | Plants: Ferns | 1 | Catalogue of Life treats this genus name as a synonym of Oreogrammitis. | |
| Regelia | genus | Melaleuca | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Melaleuca. | |
| Restella | genus | Stellera | J.G.Gmel. ex L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Stellera. | |
| Rhaesteria | genus | Rhipidoglossum | Schltr. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Rhipidoglossum. | |
| Rhamphopoma | genus | Heleobia | W. Stimpson, 1865 | 1865 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Heleobia. |
| Rhinerrhizopsis | genus | Bogoria | J.J.Sm. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Bogoria. | |
| Rhodophoneus | genus | Telophorus | Swainson, 1832 | 1832 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Telophorus. |
| Richella | genus | Goniothalamus | Hook.fil. & Thomson | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Goniothalamus. | |
| Rivea | genus | Ipomoea | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Ipomoea. | |
| Rockia | genus | Pisonia | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Pisonia. | |
| Rollinia | genus | Annona | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Annona. | |
| Rostellularia | genus | Justicia | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Justicia. | |
| Rostkovia | genus | Juncus | L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Juncus. | |
| Ruilopezia | genus | Espeletia | Mutis ex Humb. & Bonpl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Espeletia. | |
| Sacleuxia | genus | Gymnolaema | Benth. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Gymnolaema. | |
| Santomasia | genus | Hypericum | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Hypericum. | |
| Scaphophyllum | genus | Solenostoma | Mitt. | view | Plants: Liverworts | 1 | Catalogue of Life treats this genus name as a synonym of Solenostoma. | |
| Schinziophyton | genus | Ricinodendron | Müll.Arg. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Ricinodendron. | |
| Schivereckia | genus | Draba | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Draba. | |
| Sciaromiopsis | genus | Brachythecium | Schimp. | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Brachythecium. | |
| Serrastruma | genus | Strumigenys | Smith, 1860 | 1860 | view | Insects: Bees, wasps and ants | 1 | Catalogue of Life treats this genus name as a synonym of Strumigenys. |
| Sibangea | genus | Drypetes | Vahl | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Drypetes. | |
| Sinosassafras | genus | Lindera | (Adans.) Thunb. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Lindera. | |
| Siva | genus | Krisna | Kirkaldy, 1900 | 1900 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Krisna. |
| Smithorchis | genus | Platanthera | Rich. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Platanthera. | |
| Solenocarpus | genus | Spondias | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Spondias. | |
| Somersiella | genus | Parhippolyte | Borradaile, 1900 | 1900 | view | Crustaceans: Crabs, lobsters and shrimps | 1 | Catalogue of Life treats this genus name as a synonym of Parhippolyte. |
| Soromonichthys | genus | Pseudolithoxus | Isbrücker & Werner, 2001 | 2001 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Pseudolithoxus. |
| Sparganophorus | genus | Struchium | P.Browne | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Struchium. | |
| Sphaerolejeunea | genus | Lejeunea | Lib. | view | Plants: Liverworts | 1 | Catalogue of Life treats this genus name as a synonym of Lejeunea. | |
| Sphendone | genus | Samoana | Pilsbry, 1909 | 1909 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Samoana. |
| Steganopus | genus | Phalaropus | Brisson, 1760 | 1760 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Phalaropus. |
| Stelechantha | genus | Pauridiantha | Hook.fil. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Pauridiantha. | |
| Stemmacantha | genus | Rhaponticum | Vaill. ex Ludw. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Rhaponticum. | |
| Stenorrhipis | genus | Kymatocalyx | Herzog | view | Plants: Liverworts | 1 | Catalogue of Life treats this genus name as a synonym of Kymatocalyx. | |
| Sterkia | genus | Vertigo | O. F. Müller, 1773 | 1773 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Vertigo. |
| Straminergon | genus | Warnstorfia | Loeske | view | Plants: Mosses | 1 | Catalogue of Life treats this genus name as a synonym of Warnstorfia. | |
| Symmetropleura | genus | Diplophyllus | Saussure, 1859 | 1859 | view | Insects: Grasshoppers and crickets | 1 | Catalogue of Life treats this genus name as a synonym of Diplophyllus. |
| Synardisia | genus | Ardisia | Sw. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Ardisia. | |
| Syrmatium | genus | Acmispon | Raf. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Acmispon. | |
| Systemonodaphne | genus | Kubitzkia | van der Werff | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Kubitzkia. | |
| Tamania | genus | Espeletia | Mutis ex Humb. & Bonpl. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Espeletia. | |
| Taravalia | genus | Ptelea | L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Ptelea. | |
| Tartessiberus | genus | Iberus | Montfort, 1810 | 1810 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Iberus. |
| Tasmannia | genus | Drimys | Forster & G.Forst. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Drimys. | |
| Tauredophidium | genus | Acanthonus | Günther, 1878 | 1878 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Acanthonus. |
| Temnotrogon | genus | Priotelus | G. R. Gray, 1840 | 1840 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Priotelus. |
| Temu | genus | Blepharocalyx | O.Berg | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Blepharocalyx. | |
| Terminthodia | genus | Tetractomia | Hook.fil. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Tetractomia. | |
| Terrestribythinella | genus | Bythinella | Moquin-Tandon, 1856 | 1856 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Bythinella. |
| Tetrazygia | genus | Miconia | Ruiz & Pav. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Miconia. | |
| Thalassenchelys | genus | Congriscus | Jordan & Hubbs, 1925 | 1925 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Congriscus. |
| Thaumatibis | genus | Pseudibis | Hodgson, 1844 | 1844 | view | Birds | 1 | Catalogue of Life treats this genus name as a synonym of Pseudibis. |
| Thrasya | genus | Paspalum | L. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Paspalum. | |
| Thuemenidium | genus | Geoglossum | Persoon ex Fries, 1821 | 1821 | view | Fungi: Earth tongues | 1 | Catalogue of Life treats this genus name as a synonym of Geoglossum. |
| Tomopeas | genus | Eutomopeas | Pilsbry, 1946 | 1946 | view | Mammals: Bats | 1 | Catalogue of Life treats this genus name as a synonym of Eutomopeas. |
| Tonina | genus | Paepalanthus | Mart. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Paepalanthus. | |
| Tornelasmias | genus | Lamellidea | Pilsbry, 1910 | 1910 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Lamellidea. |
| Trematurella | genus | Trichouropoda | Berlese, 1916 | 1916 | view | Arachnids | 1 | Catalogue of Life treats this genus name as a synonym of Trichouropoda. |
| Trichobatrachus | genus | Astylosternus | Werner, 1898 | 1898 | view | Amphibians: Frogs and toads | 1 | Catalogue of Life treats this genus name as a synonym of Astylosternus. |
| Trientalis | genus | Lysimachia | Tourn. ex L. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Lysimachia. | |
| Trochogyra | genus | Lilloiconcha | Weyrauch, 1965 | 1965 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Lilloiconcha. |
| Tulestea | genus | Synsepalum | (A.DC.) Daniell | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Synsepalum. | |
| Turbinicola | genus | Pila | Röding, 1798 | 1798 | view | Molluscs: Gastropods | 1 | Catalogue of Life treats this genus name as a synonym of Pila. |
| Uladendron | genus | Marcanodendron | Doweld | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Marcanodendron. | |
| Urbananthus | genus | Critonia | P.Browne | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Critonia. | |
| Utleria | genus | Decalepis | Wight & Arn. | view | Plants: Dicotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Decalepis. | |
| Vampyrius | genus | Rhacophorus | Kuhl & Van Hasselt, 1822 | 1822 | view | Amphibians: Frogs and toads | 1 | Catalogue of Life treats this genus name as a synonym of Rhacophorus. |
| Vetiveria | genus | Chrysopogon | Trin. | view | Plants: Monocotyledons | 1 | Catalogue of Life treats this genus name as a synonym of Chrysopogon. | |
| Villalobosus | genus | Villalobosius | Ng & Low, 2010 | 2010 | view | Crustaceans: Crabs, lobsters and shrimps | 1 | Catalogue of Life treats this genus name as a synonym of Villalobosius. |
| Xenomugil | genus | Mugil | Linnaeus, 1758 | 1758 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Mugil. |
| Xiphocheilus | genus | Choerodon | Bleeker, 1847 | 1847 | view | Fish: Ray-finned fishes | 1 | Catalogue of Life treats this genus name as a synonym of Choerodon. |