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Homonym: A*
  • Search results: 959 homonyms found
Formal homonyms
 
Senior homonymJunior homonym
 
ICZN:Acanthella (Genus) Schmidt, 1862 - sponge ICZN:Acanthella (Genus) Allman, 1883, nom. illeg. see (Genus) Cladacanthella Calder, 1997 - invertebrate
ICZN:Acanthidium (Genus) Lowe, 1839 - fish ICZN:Acanthidium (Genus) Montrouzier, 1858, nom. illeg. see (Genus) Acanthidiellum Kirkaldy, 1904 - bug
ICZN:Acanthidium (Genus) Lowe, 1839 - fish ICZN:Acanthidium (Genus) Michener & Griswold, 1994, nom. illeg. see (Genus) Acedanthidium Michener, 2000 - bee
ICZN:Acanthidium (Genus) Montrouzier, 1858, nom. illeg. see (Genus) Acanthidiellum Kirkaldy, 1904 - bug ICZN:Acanthidium (Genus) Michener & Griswold, 1994, nom. illeg. see (Genus) Acedanthidium Michener, 2000 - bee
ICZN:Acanthocephalus (Genus) Koelreuter, 1771 - invertebrate ICZN:Acanthocephalus (Genus) A. von Frantzius, 1848, nom. illeg. - protozoan
ICZN:Acanthocerus (Genus) Palisot de Beauvois, [1818] - bug Zoology:Acanthocerus (Genus) MacLeay, 1819, nom. illeg. see (Genus) Ceratocanthus White, 1842 - beetle
ICZN:Acanthognathus (Genus) Mayr, 1887 - ant ICZN:Acanthognathus (Genus) Duncker, 1912, nom. illeg. - fish
ICZN:Acanthopus (Genus) Klug, 1807 - bee ICZN:Acanthopus (Genus) Vernet, 1877, nom. illeg. - crustacean
ICBN:Acanthosphaera (Genus) Lemmermann (1899) - alga ICBN:Acanthosphaera (Genus) Warb. (1907), nom. illeg. see (Genus) Naucleopsis Miquel, in C.F.P. Martius (1853) - plant
ICZN:Acerella (Subgenus) Berlese, 1909 see (Genus) Acerella (Berlese, 1909) Rusek, 1974 - arthropod ICZN:Acerella (Genus) Allen, 1971, nom. illeg. see (Genus) Ephacerella Paclt, 1994 - insect
ICBN:Acetabularia (Genus) J.V. Lamour. (1812) - alga ICBN:Acetabularia (Genus) (Berk.) Massee (1893), nom. illeg. see (Genus) Cyphellopus Fayod (1889), nom. dub. - fungus
ICNP:Achromobacter (Genus) Yabuuchi and Yano 1981 - prokaryote ICNP:Achromobacter (Genus) Bergey et al. 1923 - prokaryote
ICNP:Achromobacter (Genus) Yabuuchi and Yano 1981 - prokaryote ICNP:Achromobacter (Genus) Bergey et al. 1923 - prokaryote
ICZN:Actinia maculata M. Bruguière, 1792 - invertebrate ICZN:Actinia maculata Adams, 1800, nom. illeg. see Adamsia palliata (J.P. Bohadsch, 1761 ex O.F. Müller, 1776) - invertebrate
ICZN:Actinophrys marina Dujardin, 1841 see Actinophrys sol (Müller, 1773) Ehrenberg, 1830 - alga ICZN:Actinophrys marina Mikrjukov, 1996, nom. illeg. see Actinophrys tauryanini K.A. Mikrjukov & D.J. Patterson, 2001 - alga
ICZN:Actinophrys marina Dujardin, 1841 see Actinophrys sol (Müller, 1773) Ehrenberg, 1830 - alga ICZN:Actinophrys marina Mikrjukov, 1996, nom. illeg. see Actinophrys tauryanini K.A. Mikrjukov & D.J. Patterson, 2001 - alga
ICZN:Adamas (Genus) Malaise, 1945 - insect ICZN:Adamas (Genus) Huber, 1979, nom. illeg. see (Genus) Fenerbahce Özdikmen et al., 2006 - fish
ICZN:Adamas (Genus) Malaise, 1945 - insect ICZN:Adamas (Genus) Huber, 1979, nom. illeg. see (Genus) Fenerbahce Özdikmen et al., 2006 - fish
ICZN:Adelina (Genus) Dejean, 1835, nom. nud. - beetle ICZN:Adelina (Genus) Hesse, 1911, nom. illeg. - protozoan
ICZN:Adelomyia (Genus) Bonaparte, 1854, nom. nud. - bird ICZN:Adelomyia (Genus) Ulmer, 1912, nom. illeg. - insect
ICBN:Agaricomycotina (Subphylum) Doweld (2001) - fungus ICBN:Agaricomycotina (Subphylum) R. Bauer, Begerow, J.P. Samp., M. Weiß & Oberw. (2006), nom. illeg. see (Class) Basidiomycetes G. Winter (1880) - fungus
ICBN:Ainsworthia (Genus) Boissier (1844) - plant ICBN:Ainsworthia (Genus) Bat. & Cif. (1962) see (Genus) Phaeosaccardinula Henn. (1905) - fungus
ICZN:Albionella (Genus) Chickering, 1946 - arachnid ICZN:Albionella (Genus) Kabata, 1979, nom. illeg. see (Genus) Neoalbionella H. Özdikmen, 2008 - crustacean
ICZN:Alcinoe (Genus) Rang, 1828 - invertebrate ICZN:Alcinoe (Genus) Delle Chiaje, 1829[1830], nom. illeg. see (Genus) Leucothea Mertens, 1833 - invertebrate
ICZN:Alloneura (Genus) Rondani, 1856 - fly ICZN:Alloneura (Genus) Selys, 1860, nom. illeg. see (Genus) Caconeura Kirby, 1890 - insect
ICZN:Alloneura (Genus) Rondani, 1856 - fly ICZN:Alloneura (Genus) Selys, 1860, nom. illeg. see (Genus) Caconeura Kirby, 1890 - insect
ICBN:Alpinia (Genus) L. (1753), nom. rej. - plant ICBN:Alpinia (Genus) Roxburgh (1810), nom. cons. - plant
ICBN:Amanita (Genus) Dill. ex Boehm. (1760), nom. rej. see (Genus) Agaricus L. (1753), nom. sanct., nom. cons. - fungus ICBN:Amanita (Genus) Pers. (1797), nom. cons. - fungus
ICZN:Amaurina (Genus) Kolbe, 1895 - beetle ICZN:Amaurina (Genus) Aurivillius, 1910, nom. illeg. see (Genus) Amauris Hübner, 1816 - butterfly
ICZN:Ammobatoides (Genus) Radoszkowski, 1868[1867] - bee ICZN:Ammobatoides (Genus) Schenk, 1869, nom. illeg. see (Genus) Ammobates Latreille, 1809 - bee
ICBN:Amomum (Genus) L. (1753), nom. rej. - plant ICBN:Amomum (Genus) Roxburgh (1820), nom. cons. - plant
ICZN:Amphinome (Genus) Bruguière, 1789[1792] - annelid ICZN:Amphinome (Genus) Meigen, 1800, nom. illeg. see (Genus) Limonia Meigen, 1803 - fly
ICZN:Amphiporidae (Family) McIntosh, 1874 - invertebrate ICZN:Amphiporidae (Family) Ruhkin, 1930s - sponge
ICZN:Amymone (Genus) Müller, 1776 - crustacean ICZN:Amymone (Genus) Claus, 1860, nom. illeg. see (Genus) Tegastes Norman, 1903 - crustacean
ICZN:Amymone (Genus) Müller, 1776 - crustacean ICZN:Amymone (Genus) Claus, 1863, nom. illeg. see (Genus) Parategastes G.O. Sars, 1904 - crustacean
ICZN:Amymone (Genus) Claus, 1860, nom. illeg. see (Genus) Tegastes Norman, 1903 - crustacean ICZN:Amymone (Genus) Claus, 1863, nom. illeg. see (Genus) Parategastes G.O. Sars, 1904 - crustacean
ICBN:Anacardium (Genus) L. (1753) - plant ICBN:Anacardium (Genus) Lamarck, 1783, nom. illeg. - plant
ICZN:Anadara (Genus) Gray, 1847 - mollusc ICZN:Anadara (Genus) Moore, 1883, nom. illeg. see (Genus) Euploea Fabricius, 1807 - butterfly
ICZN:Anaides (Genus) Westwood, 1842 - beetle ICZN:Anaides (Genus) Baird, 1851, nom. illeg. see (Genus) Aneides Baird, 1851 - amphibian
ICZN:Anaspididae (Family) Mulsant, 1856 see (Subfamily) Anaspidinae Mulsant, 1856 - beetle ICZN:Anaspididae (Family) Thomson, 1894 - crustacean
ICZN:Ancalagon (Genus) Conway Morris, 1977 - invertebrate ICZN:Ancalagon (Genus) van Valen, 1978, nom. illeg. see (Genus) †Ankalagon van Valen, 1980 - mammal
ICZN:Ancorina (Genus) Schmidt, 1862 - sponge ICZN:Ancorina (Genus) - protozoan
ICZN:Androgynella (Genus) Cockerell, 1911 - insect ICZN:Androgynella (Genus) Gutu, 2006, nom. illeg. - crustacean
ICZN:Anepsius (Genus) LeConte, 1851 - beetle ICZN:Anepsius (Genus) Haliday ex Loew, 1857, nom. illeg. see (Genus) Anepsiomyia Bezzi, 1902 - fly
ICZN:Anomoea (Genus) Chevrolat ex Dejean, 1835, nom. emend. - beetle ICZN:Anomoea (Genus) Lacordaire, 1848, nom. illeg. see (Genus) Anomoia Walker, 1835 - fly
ICZN:Anomoia (Genus) Walker, 1835 - fly ICZN:Anomoia (Genus) Chevrolat ex Dejean, 1835, nom. illeg. see (Genus) Anomoea Chevrolat ex Dejean, 1835, nom. emend. - beetle
ICZN:Anonymus (Genus) Lang, 1884 - flatworm ICZN:Anonymus (Genus) Storer, 1988 - mammal
ICZN:Anops (Genus) Oken, 1815 see (Genus) Haemobaphes Steenstrup & Lütken, 1861 - crustacean ICZN:Anops (Genus) Bell, 1833, nom. illeg. - reptile
ICZN:Anoura (Genus) Gray, 1838 - mammal ICZN:Anoura (Genus) Gervais, 1843, nom. illeg. - arthropod
ICZN:Anthophila (Genus) Haworth, 1811 - moth ICZN:Anthophila (Genus) Ochsenheimer, 1816, nom. illeg. see (Genus) Thalpochares Lederer, 1853 - moth
ICZN:Apis subterranea Linnaeus, 1758 - bee ICZN:Apis subterranea C. Linnaeus, 1758, nom. illeg. - bee
ICZN:Apis surinamensis Linnaeus, 1758 - bee ICZN:Apis surinamensis C. Linnaeus, 1758, nom. illeg. - bee
ICZN:Apteronina (Genus) Wasmann, 1901 - beetle ICZN:Apteronina (Genus) Borgmeier, 1958, nom. illeg. see (Genus) Apteronilla Borgmeier, 1959 - fly
ICZN:Archiclops (Genus) Karsch, 1891 - insect ICZN:Archiclops (Genus) Bischof, 1900, nom. illeg. - fly
ICZN:Arge (Genus) Schrank, 1802 - wasp ICZN:Arge (Genus) Hübner, [1819], nom. illeg. see (Genus) Melanargia Meigen, 1828 - butterfly
ICZN:Argidae (Family) Konow, 1890 - wasp ICZN:Argidae (Family) see (Family) Astroblepidae Bleeker, 1862 - fish
ICZN:Aricia (Genus) Reichenbach, 1817 see (Subgenus) Aricia (Gray, 1837), nom. illeg. - butterfly ICZN:Aricia (Genus) Savigny, 1822 see (Genus) Orbinia de Quatrefages, 1865 - annelid
ICZN:Aridella (Genus) Kasparyan, 1970 - wasp ICZN:Aridella (Genus) Saaristo, 2002, nom. illeg. - arachnid
ICZN:Armandia (Genus) de Filippi, 1862 - annelid ICZN:Armandia (Genus) Blanchard, 1871 see (Genus) Bhutanitis Atkinson, 1873 - butterfly
ICZN:Armania (Genus) Dlussky, 1983 - wasp ICZN:Armania (Genus) Gabuniya & Dashzeveg, 1988, nom. illeg. - mammal
ICZN:Ascia (Genus) Scopoli, 1777 - butterfly ICZN:Ascia (Genus) Meigen, 1822, nom. illeg. see (Genus) Neoascia Williston, 1886 - fly
ICZN:Asymmetrura (Genus) Fariña, 1981 - mammal ICZN:Asymmetrura (Genus) Landry, 1991, nom. illeg. - moth
ICZN:Atelopus (Genus) Duméril & Bibron, 1841 - amphibian ICZN:Atelopus (Genus) Duméril & Bibron, 1841 see (Genus) Ateleopus Temminck & Schlegel, 1846 - fish
ICZN:Atopidae (Family) Hupé, 1953 - arthropod ICZN:Atopidae (Family) Hupé, 1953 see (Family) Rathouisiidae Heude, 1885 - mollusc
ICZN:Atractodes (Genus) Gravenhorst, 1829 - wasp ICZN:Atractodes (Genus) Germar, 1839, nom. illeg. see (Genus) Atractosomus Lacordaire, 1857 - beetle
ICZN:Atropos (Genus) Oken, 1815 see (Genus) Acherontia Laspeyres, 1809 - moth ICZN:Atropos (Genus) Leach, 1815 - insect
ICZN:Automolus (Genus) Reichenbach, 1853 - bird ICZN:Automolus (Genus) Burmeister, 1855, nom. illeg. see (Genus) Automolius Britton, 1978 - beetle
ICZN:Axiidae (Family) Huxley, 1879 - crustacean ICZN:Axiidae (Family) Rebel, 1919, nom. illeg. see (Family) Cimeliidae Chrétien, 1916 - moth
ICZN:Axiidae (Family) Huxley, 1879 - crustacean ICZN:Axiidae (Family) Rebel, 1919, nom. illeg. see (Family) Cimeliidae Chrétien, 1916 - moth
 
Formal homonyms
 
Senior homonymJunior homonym
 
ICZN:Aaata (Genus) Semenov-Tian-Shanskij, 1906 - beetle ICZN:Aaata (Genus) de Laubenfels, 1930, nom. illeg. see (Subgenus) Microciona Bowerbank, 1862 - sponge
ICZN:Abacodes (Genus) Thomson, 1858 - beetle ICZN:Abacodes (Genus) Jeannel, 1948, nom. illeg. - beetle
ICZN:Abalius (Genus) Cabanis, 1861 - bird ICZN:Abalius (Genus) Kraepelin, 1897, nom. illeg. - arachnid
ICZN:Abantiades (Genus) Herrich-Schäffer, [1856] - moth ICZN:Abantiades (Genus) Fairmaire, 1894, nom. illeg. - beetle
ICZN:Abantiades (Genus) Herrich-Schäffer, [1856] - moth ICZN:Abantiades (Genus) Broun, 1914, nom. illeg. see (Genus) Abantiadinus Schenkling, 1929 - beetle
ICZN:Abantiades (Genus) Fairmaire, 1894, nom. illeg. - beetle ICZN:Abantiades (Genus) Broun, 1914, nom. illeg. see (Genus) Abantiadinus Schenkling, 1929 - beetle
ICBN:Abapus (Genus) Adanson (1763) see (Genus) Gethyllis L. (1753) - plant ICBN:Abapus (Genus) Rafinesque (1838) see (Genus) Papiria Thunberg (1776) - plant
ICZN:Abarys (Genus) Agassiz, 1846 - beetle ICZN:Abarys (Genus) Turner, 1947, nom. illeg. see (Genus) Abareia Whalley, 1970 - moth
ICZN:Abas (Genus) Fennah, 1950 - bug ICZN:Abas (Genus) Núñez & Yáñez, 1984, nom. illeg. see (Genus) Liolaemus Wiegmann, 1834 - reptile
ICZN:Abascantus (Genus) Stål, 1864 - bug ICZN:Abascantus (Genus) Schaufuss, 1886, nom. illeg. see (Genus) Abascantodes Strand, 1928 - beetle
ICZN:Abbottina (Genus) Jordan & Fowler, 1903 - fish ICZN:Abbottina (Genus) McCulloch, 1977, nom. illeg. see (Genus) Nonion Montfort, 1808 - protist
ICZN:Abeillea (Genus) Simon, 1897 see (Genus) Abeillia Bonaparte, 1850 - bird ICZN:Abeillea (Genus) Sahlberg, 1908, nom. illeg. - beetle
ICZN:Abella (Genus) von Heyden, 1826 - arachnid ICZN:Abella (Genus) Walker, 1862, nom. illeg. - moth
ICZN:Abelterus (Genus) Stål, 1865 - bug ICZN:Abelterus (Genus) Heine & Reichenow, 1882-1890[1890], nom. illeg. - bird
ICZN:Abichia (Genus) Gemmellaro, 1888 - mollusc ICZN:Abichia (Genus) Andrusov, 1907, nom. illeg. - mollusc
ICZN:Abila (Genus) Gray, 1867 see (Subgenus) Microciona Bowerbank, 1862 - sponge ICZN:Abila (Genus) Stål, 1878, nom. illeg. see (Genus) Abilenia Strand, 1928 - insect
ICBN:Abola (Genus) Adanson (1763) see (Genus) Cinna L. (1753) - plant ICBN:Abola (Genus) Lindley (1853) - plant
ICZN:Abrana (Genus) Strand, 1928 - mammal ICZN:Abrana (Genus) Parker, 1931, nom. illeg. see (Genus) Parkerana Dubois, 1984 - amphibian
ICZN:Abranchus (Genus) Boïé, 1824 see (Genus) Abrancha van Hasselt, 1824 - mollusc ICZN:Abranchus (Genus) Harlan, 1825, nom. illeg. - reptile
ICZN:Abranchus (Genus) Boïé, 1824 see (Genus) Abrancha van Hasselt, 1824 - mollusc ICZN:Abranchus (Genus) Johansson, 1896, nom. illeg. - annelid
ICZN:Abranchus (Genus) Harlan, 1825, nom. illeg. - reptile ICZN:Abranchus (Genus) Johansson, 1896, nom. illeg. - annelid
ICZN:Absentia (Genus) Togashi, 1990 - insect ICZN:Absentia (Genus) Huang, 2001, nom. illeg. - arachnid
ICZN:Absolonia (Genus) Börner, 1901 - arthropod ICZN:Absolonia (Genus) Roewer, 1915, nom. illeg. see (Genus) Abasola Strand, 1928 - arachnid
ICZN:Absyrtes (Genus) Guenée, 1857 - moth ICZN:Absyrtes (Genus) Brischke, 1880, nom. illeg. - insect
ICZN:Acacallis (Genus) Hübner, 1823 - moth ICZN:Acacallis (Genus) Pascoe, 1883, nom. illeg. see (Genus) Apocallus Marshall, 1939 - beetle
ICZN:Acachmena (Genus) Turner, 1908 - moth ICZN:Acachmena (Genus) Turner, 1911, nom. illeg. see (Genus) Cathetus Fletcher, 1979 - moth
ICZN:Acaerus (Genus) Pascoe, 1882 - beetle ICZN:Acaerus (Genus) Loginova, 1976, nom. illeg. - bug
ICZN:Acalanthis (Genus) Erichson, 1844 - beetle ICZN:Acalanthis (Genus) Gistl, 1848, nom. illeg. - arachnid
ICZN:Acalia (Genus) Gray, 1840 - echinoderm ICZN:Acalia (Genus) Guenée, 1845, nom. illeg. see (Genus) Lignyoptera Lederer, 1853 - moth
ICZN:Acamas (Genus) de Montfort, 1808 - mollusc ICZN:Acamas (Genus) Duchassaing & Michelotti, 1864, nom. illeg. see (Genus) Acamasina de Laubenfels, 1936 - sponge
ICZN:Acanthaspis (Genus) Amyot & Serville, 1843 - bug ICZN:Acanthaspis (Genus) Newberry, 1875, nom. illeg. see (Genus) Ohiodorulites Whitley, 1933 - fish
ICZN:Acanthechinus (Genus) Duncan & Sladen, 1882 - echinoderm ICZN:Acanthechinus (Genus) Stebbing, 1888, nom. illeg. - crustacean
ICZN:Acanthobrachys (Genus) Fieber, 1861[1860] - bug ICZN:Acanthobrachys (Genus) Lacordaire, 1863, nom. illeg. see (Genus) Acanthobrachis Jekel, 1853[1854] - beetle
ICZN:Acanthobracon (Genus) Kriechbaumer, 1900 - insect ICZN:Acanthobracon (Genus) Szépligeti, 1902, nom. illeg. - insect
ICZN:Acanthocampa (Genus) Packard, 1902 - moth ICZN:Acanthocampa (Genus) Dyar, 1905, nom. illeg. - moth
ICZN:Acanthocaris (Genus) Sim, 1872 - crustacean ICZN:Acanthocaris (Genus) Peach, 1883, nom. illeg. - crustacean
ICZN:Acanthocephalus (Genus) A. von Frantzius, 1848, nom. illeg. - protozoan ICZN:Acanthocephalus (Genus) Qiu, 1983, nom. illeg. - arthropod
ICZN:Acanthocephalus (Genus) Koelreuter, 1771 - invertebrate ICZN:Acanthocephalus (Genus) Qiu, 1983, nom. illeg. - arthropod
ICZN:Acanthochila (Genus) Mörch, 1868 - mollusc ICZN:Acanthochila (Genus) Stål, 1873, nom. illeg. - bug
ICZN:Acanthochirus (Genus) Peters, 1861 see (Genus) Cercophonius Peters, 1861 - arachnid ICZN:Acanthochirus (Genus) Oppel, 1862, nom. illeg. see (Genus) †Acanthochirana Strand, 1928 - crustacean
ICZN:Acanthochitus (Genus) Philippi, 1844 - mollusc ICZN:Acanthochitus (Genus) Herrmannsen, 1846, nom. illeg. see (Genus) Acanthochites Risso, 1826 - mollusc
ICZN:Acanthochrysis (Genus) Conrad, 1932 - protozoan ICZN:Acanthochrysis (Genus) Haupt, 1956, nom. illeg. - insect
ICBN:Acanthocladium (Genus) F. Muell. (1861) - plant ICBN:Acanthocladium (Genus) Mitt. (1878), nom. illeg. - plant
ICZN:Acanthocnemis (Genus) Hawle & Corda, 1847 - arthropod ICZN:Acanthocnemis (Genus) Blanchard, 1852, nom. illeg. - fly
ICZN:Acanthocnemis (Genus) Hawle & Corda, 1847 - arthropod ICZN:Acanthocnemis (Genus) Signoret, 1865, nom. illeg. - bug
ICZN:Acanthocnemis (Genus) Blanchard, 1852, nom. illeg. - fly ICZN:Acanthocnemis (Genus) Signoret, 1865, nom. illeg. - bug
ICZN:Acanthocyathus (Genus) Milne-Edwards & Haime, 1848 - invertebrate ICZN:Acanthocyathus (Genus) Bedford, 1934, nom. illeg. - sponge
ICZN:Acanthodera (Genus) Agassiz, 1846 - beetle ICZN:Acanthodera (Genus) Westwood, 1847, nom. illeg. see (Genus) Acanthoderus Gray, 1835 - insect
ICZN:Acanthodesma (Genus) Zittel, 1876 - protozoan ICZN:Acanthodesma (Genus) Uhler, 1896, nom. illeg. - bug
ICZN:Acanthodiscus (Genus) Uhlig, 1905 - mollusc ICZN:Acanthodiscus (Genus) MacCallum, 1918, nom. illeg. - flatworm
ICZN:Acanthodiscus (Genus) Uhlig, 1905 - mollusc ICZN:Acanthodiscus (Genus) Volkmer-Ribeiro, 1996, nom. illeg. see (Genus) Racekiela Bass & Volkmer-Ribeiro, 1998 - sponge
ICZN:Acanthodiscus (Genus) MacCallum, 1918, nom. illeg. - flatworm ICZN:Acanthodiscus (Genus) Volkmer-Ribeiro, 1996, nom. illeg. see (Genus) Racekiela Bass & Volkmer-Ribeiro, 1998 - sponge
ICZN:Acanthodon (Genus) Guérin-Ménéville, 1838 - arachnid ICZN:Acanthodon (Genus) von Meyer, 1843, nom. illeg. - mammal
ICZN:Acanthodon (Genus) Guérin-Ménéville, 1838 - arachnid ICZN:Acanthodon (Genus) Weise, 1880, nom. illeg. see (Genus) Machomena Dubois, 1887 - beetle
ICZN:Acanthodon (Genus) von Meyer, 1843, nom. illeg. - mammal ICZN:Acanthodon (Genus) Weise, 1880, nom. illeg. see (Genus) Machomena Dubois, 1887 - beetle
ICBN:Acanthogonyaulax (Genus) (Kof.) H. Graham (1942) see (Genus) Gonyaulax Diesing (1866) - protist ICBN:Acanthogonyaulax (Genus) Sarjeant (1966) - protist
ICZN:Acantholithus (Genus) Stimpson, 1858 see (Genus) Paralomis White, 1856 - crustacean ICZN:Acantholithus (Genus) Lindström, 1899, nom. illeg. see (Genus) Acidolites Lang, Smith & Thomas, 1940 - invertebrate
ICZN:Acantholonche (Genus) Haeckel, 1881 - protozoan ICZN:Acantholonche (Genus) Popofsky, 1904, nom. illeg. - protozoan
ICZN:Acantholophus (Genus) Guérin-Ménéville, 1838 - beetle ICZN:Acantholophus (Genus) Koch, 1839, nom. illeg. - arachnid
ICZN:Acanthomerus (Genus) Guérin, 1834 - beetle ICZN:Acanthomerus (Genus) Schönherr, 1843, nom. illeg. see (Genus) Carteromerus Lacordaire, 1863 - beetle
ICZN:Acanthomys (Genus) Lesson, 1842 - mammal ICZN:Acanthomys (Genus) Gray, 1843, nom. illeg. - mammal
ICZN:Acanthomys (Genus) Lesson, 1842 - mammal ICZN:Acanthomys (Genus) Gray, 1867, nom. illeg. - mammal
ICZN:Acanthomys (Genus) Gray, 1843, nom. illeg. - mammal ICZN:Acanthomys (Genus) Gray, 1867, nom. illeg. - mammal
ICZN:Acanthomys (Genus) Gray, 1843, nom. illeg. - mammal ICZN:Acanthomys (Genus) Tokuda, 1941, nom. illeg. see (Genus) Tokudamys Johnson, 1946 - mammal
ICZN:Acanthomys (Genus) Gray, 1867, nom. illeg. - mammal ICZN:Acanthomys (Genus) Tokuda, 1941, nom. illeg. see (Genus) Tokudamys Johnson, 1946 - mammal
ICZN:Acanthomys (Genus) Lesson, 1842 - mammal ICZN:Acanthomys (Genus) Tokuda, 1941, nom. illeg. see (Genus) Tokudamys Johnson, 1946 - mammal
ICZN:Acanthonia (Genus) Haeckel, 1881 - protozoan ICZN:Acanthonia (Genus) Popofsky, 1904, nom. illeg. - protozoan
ICZN:Acanthonia (Genus) Haeckel, 1881 - protozoan ICZN:Acanthonia (Genus) Wasmann, 1918, nom. illeg. see (Genus) Gapia Blackwelder, 1952 - beetle
ICZN:Acanthonia (Genus) Popofsky, 1904, nom. illeg. - protozoan ICZN:Acanthonia (Genus) Wasmann, 1918, nom. illeg. see (Genus) Gapia Blackwelder, 1952 - beetle
ICZN:Acanthonotus (Genus) Goldfuss, 1809 see (Genus) Tachyglossus Illiger, 1811 - mammal ICZN:Acanthonotus (Genus) Ross, 1835, nom. illeg. see (Genus) Acanthonotozoma Boeck, 1876 - crustacean
ICZN:Acanthonotus (Genus) Ross, 1835, nom. illeg. see (Genus) Acanthonotozoma Boeck, 1876 - crustacean ICZN:Acanthonotus (Genus) Nalepa, 1889, nom. illeg. see (Genus) Tegonotus Nalepa, 1890 - mite
ICZN:Acanthonotus (Genus) Goldfuss, 1809 see (Genus) Tachyglossus Illiger, 1811 - mammal ICZN:Acanthonotus (Genus) Nalepa, 1889, nom. illeg. see (Genus) Tegonotus Nalepa, 1890 - mite
ICZN:Acanthopalpus (Genus) Ausserer, 1871 - arachnid ICZN:Acanthopalpus (Genus) Makarova, 1978, nom. illeg. - mite
ICZN:Acanthophallus (Genus) Cope, 1893 - reptile ICZN:Acanthophallus (Genus) Coiffait, 1956, nom. illeg. see (Genus) Acanthophus Coiffait, 1983 - beetle
ICZN:Acanthophallus (Genus) Lühe, 1903, nom. illeg. - flatworm ICZN:Acanthophallus (Genus) Coiffait, 1956, nom. illeg. see (Genus) Acanthophus Coiffait, 1983 - beetle
ICZN:Acanthophallus (Genus) Cope, 1893 - reptile ICZN:Acanthophallus (Genus) Lühe, 1903, nom. illeg. - flatworm
ICZN:Acanthophila (Genus) Heinemann, 1877[1870] - moth ICZN:Acanthophila (Genus) Duda, 1924, nom. illeg. - fly
ICZN:Acanthophlebia (Genus) Towns, 1983 - insect ICZN:Acanthophlebia (Genus) Clarke, 1986, nom. illeg. - moth
ICZN:Acanthophrys (Genus) Milne-Edwards, 1865 - crustacean ICZN:Acanthophrys (Genus) Loman, 1902, nom. illeg. see (Genus) Acanthophrysella Strand, 1911 - arachnid
ICZN:Acanthoplites (Genus) Sinzow, 1907 - mollusc ICZN:Acanthoplites (Genus) Douvillé, 1912, nom. illeg. - mollusc
ICZN:Acanthopsilus (Genus) Kieffer, 1908 - insect ICZN:Acanthopsilus (Genus) Portevin, 1914, nom. illeg. - beetle
ICZN:Acanthopterus (Genus) Gray, 1832 - beetle ICZN:Acanthopterus (Genus) Faust, 1889, nom. illeg. - beetle
ICZN:Acanthopygus (Genus) Montrouzier, 1861 - beetle ICZN:Acanthopygus (Genus) Deyrolle, 1864, nom. illeg. see (Genus) Geralius Harold, 1869 - beetle
ICZN:Acanthopyrgus (Genus) Descamps & Wintrebert, 1966 - insect ICZN:Acanthopyrgus (Genus) Handfield, 1967, nom. illeg. see (Genus) †Yukonensis Özdikmen, 2009 - sponge
ICZN:Acanthorhinus (Genus) de Blainville, 1816 - fish ICZN:Acanthorhinus (Genus) Agassiz, 1846, nom. illeg. - beetle
ICZN:Acanthosoma (Genus) Curtis, 1824 - bug ICZN:Acanthosoma (Genus) Claus, 1863, nom. illeg. - crustacean
ICZN:Acanthosphaera (Genus) Ehrenberg, 1858 - protist ICZN:Acanthosphaera (Genus) Duan, 1984, nom. illeg. - invertebrate
ICBN:Acanthostigmella (Genus) Höhn. (1905) - fungus ICBN:Acanthostigmella (Genus) Rick (1933), nom. illeg. - fungus
ICZN:Acanthostoma (Genus) Fischer[-Waldheim], 1813 - annelid ICZN:Acanthostoma (Genus) Credner, 1883, nom. illeg. - amphibian
ICZN:Acanthostoma (Genus) Fischer[-Waldheim], 1813 - annelid ICZN:Acanthostoma (Genus) Kriechbaumer, 1894, nom. illeg. - insect
ICZN:Acanthostoma (Genus) Credner, 1883, nom. illeg. - amphibian ICZN:Acanthostoma (Genus) Kriechbaumer, 1894, nom. illeg. - insect
ICBN:Acanthothecium (Genus) Speg. (1889) see (Genus) Ypsilonia Lév. (1846) - fungus ICBN:Acanthothecium (Genus) Vain. (1890), nom. illeg. - fungus
ICZN:Acanthothorax (Genus) Gaede, 1832 - beetle ICZN:Acanthothorax (Genus) A. Costa, 1839, nom. illeg. see (Genus) Costiella Reuter, 1890 - bug
ICZN:Acanthothorax (Genus) Gaede, 1832 - beetle ICZN:Acanthothorax (Genus) Bretfeld & Griegel, 1999, nom. illeg. - arthropod
ICZN:Acanthothorax (Genus) A. Costa, 1839, nom. illeg. see (Genus) Costiella Reuter, 1890 - bug ICZN:Acanthothorax (Genus) Bretfeld & Griegel, 1999, nom. illeg. - arthropod
ICZN:Acanthotrema (Genus) Oshmarin & Parakhin, 1960, nom. illeg. - flatworm ICZN:Acanthotrema (Genus) Baker & Rowe, 1990, nom. illeg. - echinoderm
ICZN:Acanthotrema (Genus) Travassos, 1928 - flatworm ICZN:Acanthotrema (Genus) Baker & Rowe, 1990, nom. illeg. - echinoderm
ICZN:Acanthotrema (Genus) Travassos, 1928 - flatworm ICZN:Acanthotrema (Genus) Oshmarin & Parakhin, 1960, nom. illeg. - flatworm
ICZN:Acardo (Genus) Bruguière, 1789 see (Genus) Arcado Bruguière, 1789 - mollusc ICZN:Acardo (Genus) Lamarck, 1799, nom. illeg. - mollusc
ICZN:Acardo (Genus) Bruguière, 1789 see (Genus) Arcado Bruguière, 1789 - mollusc ICZN:Acardo (Genus) Swainson, 1840, nom. illeg. - mollusc
ICZN:Acardo (Genus) Lamarck, 1799, nom. illeg. - mollusc ICZN:Acardo (Genus) Swainson, 1840, nom. illeg. - mollusc
ICZN:Acardo (Genus) Lamarck, 1799, nom. illeg. - mollusc ICZN:Acardo (Genus) Herrmannsen, 1846, nom. illeg. - mollusc
ICZN:Acardo (Genus) Swainson, 1840, nom. illeg. - mollusc ICZN:Acardo (Genus) Herrmannsen, 1846, nom. illeg. - mollusc
ICZN:Acardo (Genus) Bruguière, 1789 see (Genus) Arcado Bruguière, 1789 - mollusc ICZN:Acardo (Genus) Herrmannsen, 1846, nom. illeg. - mollusc
ICZN:Acarellus (Genus) Westwood, 1870 - arachnid ICZN:Acarellus (Genus) Tatem, 1872, nom. illeg. - arachnid
ICBN:Acarna (Genus) Boehmer (1760) see (Genus) Atractylis L. (1753) - plant ICBN:Acarna (Genus) J. Hill (1762) see (Genus) Picnomon Adanson (1763) - plant
ICZN:Acaroceras (Genus) Grandjean, 1936 - mite ICZN:Acaroceras (Genus) Chen, Qi & Chen, 1979, nom. illeg. - mollusc
ICZN:Acaroceras (Subgenus) Grandjean, 1936 - mite ICZN:Acaroceras (Genus) Chen, Qi & Chen, 1979, nom. illeg. - mollusc
ICZN:Acaropsis (Genus) Moquin-Tandon, 1863 - mite ICZN:Acaropsis (Genus) Steindachner, 1875, nom. illeg. see (Genus) Acaronia Myers, 1940 - fish
ICZN:Acathartus (Genus) Fåhraeus, 1872 - beetle ICZN:Acathartus (Genus) Grouvelle, 1913, nom. illeg. - beetle
ICZN:Acca (Genus) Hübner, 1819 - butterfly ICZN:Acca (Genus) Johnson, 1899, nom. illeg. see (Genus) Aka de Laubenfels, 1936, nom. illeg. - sponge
ICZN:Accola (Genus) Simon, 1889 - arachnid ICZN:Accola (Genus) Jordan, 1894, nom. illeg. see (Genus) Accolona Strand, 1942 - beetle
ICZN:Acelis (Genus) Diesing, 1862 - flatworm ICZN:Acelis (Genus) Plehn, 1896, nom. illeg. - flatworm
ICZN:Acentetus (Genus) Cabanis & Heine, 1862-1863[1863] - bird ICZN:Acentetus (Genus) Scudder, 1897, nom. illeg. see (Genus) Akentetus McNeill, 1897 - insect
ICZN:Acera (Genus) Cuvier, 1810, nom. illeg. see (Genus) Akera Müller, 1776 - mollusc ICZN:Acera (Genus) Lamarck, 1812, nom. illeg. see (Genus) Akera Müller, 1776 - mollusc
ICZN:Acera (Genus) Lamarck, 1812, nom. illeg. see (Genus) Akera Müller, 1776 - mollusc ICZN:Acera (Genus) Albers, 1850, nom. illeg. see (Genus) Holospira Martens, 1860 - mollusc
ICZN:Acera (Genus) Cuvier, 1810, nom. illeg. see (Genus) Akera Müller, 1776 - mollusc ICZN:Acera (Genus) Albers, 1850, nom. illeg. see (Genus) Holospira Martens, 1860 - mollusc
ICZN:Aceratosmia (Genus) Schmiedeknecht, [1885] - insect ICZN:Aceratosmia (Genus) Tkalcu, 1969, nom. illeg. - insect
ICZN:Acerella (Genus) (Berlese, 1909) Rusek, 1974 - arthropod ICZN:Acerella (Genus) Allen, 1971, nom. illeg. see (Genus) Ephacerella Paclt, 1994 - insect
ICZN:Aceros (Genus) Hodgson, 1844 - bird ICZN:Aceros (Genus) Boeck, 1861, nom. illeg. see (Genus) Arrhis Stebbing, 1906 - crustacean
ICZN:Acerus (Genus) Agassiz, 1846 - bird ICZN:Acerus (Genus) Michael, 1884, nom. illeg. - arachnid
ICZN:Acerus (Genus) Burmeister, 1847, nom. illeg. - beetle ICZN:Acerus (Genus) Michael, 1884, nom. illeg. - arachnid
ICZN:Acerus (Genus) Agassiz, 1846 - bird ICZN:Acerus (Genus) Burmeister, 1847, nom. illeg. - beetle
ICZN:Acervularia (Genus) Schweigger, 1819 - invertebrate ICZN:Acervularia (Genus) Lonsdale, 1839, nom. illeg. - invertebrate
ICZN:Acestus (Genus) Leidy, 1852 - annelid ICZN:Acestus (Genus) Haag-Rutenberg, 1875, nom. illeg. see (Genus) Acestophanus Koch, 1950 - beetle
ICBN:Acetabularia (Genus) J.V. Lamour. (1812) - alga ICBN:Acetabularia (Genus) (Berk.) Massee (1893), nom. illeg. see (Genus) Cyphellopus Fayod (1889), nom. dub. - fungus
ICZN:Achaetothrips (Genus) Karny, 1908 - insect ICZN:Achaetothrips (Genus) Shumsher Singh, 1946, nom. illeg. - insect
ICZN:Acheles (Genus) Cocco, 1832 see (Genus) Sergestes Milne-Edwards, 1830 - crustacean ICZN:Acheles (Genus) Oudemans, 1903, nom. illeg. see (Genus) Raphignathus Dugès, 1834 - mite
ICBN:Achyronia (Genus) A. van Royen ex L. (1758) - plant ICBN:Achyronia (Genus) J.C. Wendland, 1798, nom. illeg. - plant
ICBN:Acia (Genus) Schreb. (1791) see (Genus) Acioa Aubl. (1775) - plant ICBN:Acia (Genus) P. Karst. (1879), nom. illeg. see (Genus) Mycoacia Donk (1931) - fungus
ICZN:Aciculina (Genus) Adams, 1853 - mollusc ICZN:Aciculina (Genus) Deshayes, 1862 - mollusc
ICZN:Aciculina (Genus) Adams, 1853 - mollusc ICZN:Aciculina (Genus) Meek, 1871 see (Genus) †Streptacis Meek, 1871 - mollusc
ICZN:Aciculina (Genus) Deshayes, 1862 - mollusc ICZN:Aciculina (Genus) Meek, 1871 see (Genus) †Streptacis Meek, 1871 - mollusc
ICZN:Aciculina (Genus) Deshayes, 1862 - mollusc ICZN:Aciculina (Genus) Westerlund, 1887 - mollusc
ICZN:Aciculina (Genus) Adams, 1853 - mollusc ICZN:Aciculina (Genus) Westerlund, 1887 - mollusc
ICZN:Aciculina (Genus) Meek, 1871 see (Genus) †Streptacis Meek, 1871 - mollusc ICZN:Aciculina (Genus) Westerlund, 1887 - mollusc
ICZN:Aciculina (Genus) Westerlund, 1887 - mollusc ICZN:Aciculina (Genus) Vyalov, 1966, nom. illeg. see (Genus) †Aciculella Vyalov, 1968 - protist
ICZN:Aciculina (Genus) Adams, 1853 - mollusc ICZN:Aciculina (Genus) Vyalov, 1966, nom. illeg. see (Genus) †Aciculella Vyalov, 1968 - protist
ICZN:Aciculina (Genus) Deshayes, 1862 - mollusc ICZN:Aciculina (Genus) Vyalov, 1966, nom. illeg. see (Genus) †Aciculella Vyalov, 1968 - protist
ICZN:Aciculina (Genus) Meek, 1871 see (Genus) †Streptacis Meek, 1871 - mollusc ICZN:Aciculina (Genus) Vyalov, 1966, nom. illeg. see (Genus) †Aciculella Vyalov, 1968 - protist
ICBN:Aciella (Genus) Tiegh. (1894) - plant ICBN:Aciella (Genus) (P. Karst.) P. Karst. (1899), nom. illeg. see (Genus) Asterodon Pat. (1894) - fungus
ICZN:Aclytia (Genus) Hübner, [1819] - moth ICZN:Aclytia (Genus) Broun, 1880, nom. illeg. see (Genus) Asilis Broun, 1893 - beetle
ICZN:Acmophyllum (Genus) Karsch, 1890 - insect ICZN:Acmophyllum (Genus) Syrova, 1968, nom. illeg. - invertebrate
ICZN:Acrilla (Genus) Adams, 1860 - mollusc ICZN:Acrilla (Genus) Stål, 1863, nom. illeg. see (Genus) Thaumastopsaltria Kirkaldy, 1900 - bug
ICZN:Acrilla (Subgenus) Adams, 1860 - mollusc ICZN:Acrilla (Genus) Stål, 1863, nom. illeg. see (Genus) Thaumastopsaltria Kirkaldy, 1900 - bug
ICZN:Acrobothrium (Genus) Olsson, 1872 see (Genus) Cyathocephalus Kessler, 1868 - flatworm ICZN:Acrobothrium (Genus) Baer, 1948, nom. illeg. see (Genus) Acanthobothrium Blanchard, 1848 - flatworm
ICZN:Acrobotrissa (Genus) Haeckel, 1887 - protist ICZN:Acrobotrissa (Genus) Popofsky, 1913, nom. illeg. - protist
ICBN:Acrocarpus (Genus) Wight ex Arn. (1838) - plant ICBN:Acrocarpus (Genus) Kützing (1843), nom. illeg. - alga
ICBN:Acrocladium (Genus) Mitt. (1869) - plant ICBN:Acrocladium (Genus) Petr. (1949) see (Genus) Periconiella Sacc. (1885) - fungus
ICZN:Acrolophus (Genus) Poey, 1832 - moth ICZN:Acrolophus (Genus) Ramme, 1941, nom. illeg. - insect
ICBN:Acronema (Genus) Falc. ex Edgew. (1846) - plant ICBN:Acronema (Genus) Teal, Guillemette, Chapman & Margulis (1998) see (Genus) Cafeteria Fenchel & Patterson (1988) - protist
ICZN:Acroria (Genus) Walker, 1858 - moth ICZN:Acroria (Genus) Cossmann, 1889, nom. illeg. see (Genus) †Acroreia Cossmann, 1885 - mollusc
ICZN:Acroriodes (Genus) Druce, 1908 - moth ICZN:Acroriodes (Genus) Hampson, 1908, nom. illeg. see (Genus) Acroriodes Druce, 1908 - moth
ICBN:Acroscyphus (Genus) Lév. (1846) - fungus ICBN:Acroscyphus (Genus) N. Kitagawa (1984) see (Genus) Acroscyphella N. Kitagawa & R. Grolle (1985) - plant
ICBN:Acrospira (Genus) Mont. (1857) - fungus ICBN:Acrospira (Genus) Welwitsch ex J.G. Baker (1878) see (Genus) Debesia O. Kuntze (1891) - plant
ICZN:Actea (Genus) Germar, 1842 - mammal ICZN:Actea (Genus) Walker, 1854, nom. illeg. - moth
ICBN:Actinella (Genus) Juss. ex Nutt. (1818), nom. illeg. - plant ICBN:Actinella (Genus) F.W. Lewis (1864), nom. cons. - alga
ICZN:Actinodontidae (Family) Lydekker, 1885 - amphibian ICZN:Actinodontidae (Family) Davies, 1933, nom. illeg. - mollusc
ICZN:Actinospongia (Genus) d'Orbigny, 1849 - sponge ICZN:Actinospongia (Genus) Mostler, 1986, nom. illeg. see (Genus) †Actinospongiella Reid, 2004 - sponge
ICZN:Acuaria (Genus) Bremser, 1811 - nematode ICZN:Acuaria (Genus) Quenstedt, 1856, nom. illeg. see (Genus) †Acuarites Schindewolf, 1963 - mollusc
ICZN:Acuaria (Genus) Bremser, 1811 - nematode ICZN:Acuaria (Genus) Zakrzewski, 1886, nom. illeg. - mollusc
ICZN:Acuaria (Genus) Quenstedt, 1856, nom. illeg. see (Genus) †Acuarites Schindewolf, 1963 - mollusc ICZN:Acuaria (Genus) Zakrzewski, 1886, nom. illeg. - mollusc
ICZN:Acus (Subgenus) Swainson, 1839 see (Genus) Entelurus Duméril, 1870 - fish ICZN:Acus (Genus) Gray, 1847, nom. illeg. see (Genus) Oxymeris Dall, 1903 - mollusc
ICZN:Adamas (Genus) Malaise, 1945 - insect ICZN:Adamas (Genus) Afanasieva, 2000, nom. illeg. see (Genus) †Adamasirad Afanasieva, 2009 - protist
ICZN:Adamas (Genus) Huber, 1979, nom. illeg. see (Genus) Fenerbahce Özdikmen et al., 2006 - fish ICZN:Adamas (Genus) Afanasieva, 2000, nom. illeg. see (Genus) †Adamasirad Afanasieva, 2009 - protist
ICBN:Adelanthus (Genus) Endl. (1840), nom. rej. - plant ICBN:Adelanthus (Genus) Mitt. (1864), nom. cons. - plant
ICZN:Adelomorpha (Genus) Snellen, 1885 - moth ICZN:Adelomorpha (Genus) Tapparone-Canefri, 1886, nom. illeg. - mollusc
ICZN:Adelungia (Genus) Melichar, 1902 - bug ICZN:Adelungia (Genus) Suleymanov, 1966, nom. illeg. - protist
ICZN:Adelungia (Genus) Klapálek, 1914, nom. illeg. see (Genus) Claassenia Wu, 1934 - insect ICZN:Adelungia (Genus) Suleymanov, 1966, nom. illeg. - protist
ICZN:Adelungia (Genus) Melichar, 1902 - bug ICZN:Adelungia (Genus) Klapálek, 1914, nom. illeg. see (Genus) Claassenia Wu, 1934 - insect
ICZN:Adinopsis (Genus) Cameron, 1918 - beetle ICZN:Adinopsis (Genus) Odhner, 1923, nom. illeg. see (Genus) Adinassa Horro, Schönherr & Rolán, 2018 - mollusc
ICZN:Admiranda (Genus) Marfenkova, 1991 - protist ICZN:Admiranda (Genus) Ariunchimeg, 1996, nom. illeg. see (Genus) †Admirandopora Ariunchimeg, 2012 - invertebrate
ICZN:Adra (Genus) Walker, 1863 - moth ICZN:Adra (Genus) Schouteden, 1951, nom. illeg. - bug
ICZN:Advena (Genus) Gude, 1913 - mollusc ICZN:Advena (Genus) Kabata, 1979, nom. illeg. see (Genus) Kabatazus Özdikmen, 2008 - crustacean
ICZN:Aedia (Genus) Hübner, 1823 - moth ICZN:Aedia (Genus) Duponchel, 1836, nom. illeg. - moth
ICZN:Aedilis (Genus) Audinet-Serville, 1835 - beetle ICZN:Aedilis (Genus) Gistl, 1848, nom. illeg. see (Genus) Adela Latreille, 1796 - moth
ICZN:Aegina (Genus) Eschscholtz, 1829 - invertebrate ICZN:Aegina (Genus) Krøyer, 1843, nom. illeg. see (Genus) Aeginina Norman, 1905 - crustacean
ICZN:Aenigma (Genus) Omelko, 1988, nom. illeg. - moth ICZN:Aenigma (Genus) Wesolowska & Haddad, 2009, nom. illeg. see (Genus) Zulunigma Wesolowska & Cumming, 2011 - arachnid
ICZN:Aenigma (Genus) Karsch, 1878, nom. illeg. - arachnid ICZN:Aenigma (Genus) Wesolowska & Haddad, 2009, nom. illeg. see (Genus) Zulunigma Wesolowska & Cumming, 2011 - arachnid
ICZN:Aenigma (Genus) Strecker, 1876, nom. illeg. - moth ICZN:Aenigma (Genus) Wesolowska & Haddad, 2009, nom. illeg. see (Genus) Zulunigma Wesolowska & Cumming, 2011 - arachnid
ICZN:Aenigma (Genus) Newman, 1836 - beetle ICZN:Aenigma (Genus) Wesolowska & Haddad, 2009, nom. illeg. see (Genus) Zulunigma Wesolowska & Cumming, 2011 - arachnid
ICZN:Aenigma (Genus) Koch, 1846, nom. illeg. - mollusc ICZN:Aenigma (Genus) Wesolowska & Haddad, 2009, nom. illeg. see (Genus) Zulunigma Wesolowska & Cumming, 2011 - arachnid
ICZN:Aenigma (Genus) Amsel, 1956, nom. illeg. see (Genus) Aenigmodes Amsel, 1957 - moth ICZN:Aenigma (Genus) Wesolowska & Haddad, 2009, nom. illeg. see (Genus) Zulunigma Wesolowska & Cumming, 2011 - arachnid
ICZN:Aenigma (Genus) Amsel, 1956, nom. illeg. see (Genus) Aenigmodes Amsel, 1957 - moth ICZN:Aenigma (Genus) Omelko, 1988, nom. illeg. - moth
ICZN:Aenigma (Genus) Koch, 1846, nom. illeg. - mollusc ICZN:Aenigma (Genus) Omelko, 1988, nom. illeg. - moth
ICZN:Aenigma (Genus) Newman, 1836 - beetle ICZN:Aenigma (Genus) Omelko, 1988, nom. illeg. - moth
ICZN:Aenigma (Genus) Strecker, 1876, nom. illeg. - moth ICZN:Aenigma (Genus) Omelko, 1988, nom. illeg. - moth
ICZN:Aenigma (Genus) Karsch, 1878, nom. illeg. - arachnid ICZN:Aenigma (Genus) Omelko, 1988, nom. illeg. - moth
ICZN:Aenigma (Genus) Karsch, 1878, nom. illeg. - arachnid ICZN:Aenigma (Genus) Amsel, 1956, nom. illeg. see (Genus) Aenigmodes Amsel, 1957 - moth
ICZN:Aenigma (Genus) Strecker, 1876, nom. illeg. - moth ICZN:Aenigma (Genus) Amsel, 1956, nom. illeg. see (Genus) Aenigmodes Amsel, 1957 - moth
ICZN:Aenigma (Genus) Newman, 1836 - beetle ICZN:Aenigma (Genus) Amsel, 1956, nom. illeg. see (Genus) Aenigmodes Amsel, 1957 - moth
ICZN:Aenigma (Genus) Koch, 1846, nom. illeg. - mollusc ICZN:Aenigma (Genus) Amsel, 1956, nom. illeg. see (Genus) Aenigmodes Amsel, 1957 - moth
ICZN:Aenigma (Genus) Newman, 1836 - beetle ICZN:Aenigma (Genus) Koch, 1846, nom. illeg. - mollusc
ICZN:Aenigma (Genus) Newman, 1836 - beetle ICZN:Aenigma (Genus) Strecker, 1876, nom. illeg. - moth
ICZN:Aenigma (Genus) Koch, 1846, nom. illeg. - mollusc ICZN:Aenigma (Genus) Strecker, 1876, nom. illeg. - moth
ICZN:Aenigma (Genus) Koch, 1846, nom. illeg. - mollusc ICZN:Aenigma (Genus) Karsch, 1878, nom. illeg. - arachnid
ICZN:Aenigma (Genus) Newman, 1836 - beetle ICZN:Aenigma (Genus) Karsch, 1878, nom. illeg. - arachnid
ICZN:Aenigma (Genus) Strecker, 1876, nom. illeg. - moth ICZN:Aenigma (Genus) Karsch, 1878, nom. illeg. - arachnid
ICZN:Aerope (Genus) White, 1847 - mollusc ICZN:Aerope (Genus) Martens, 1860, nom. illeg. see (Genus) Natalina Pilsbry, 1893 - mollusc
ICZN:Aethia (Genus) Merrem, 1788 - bird ICZN:Aethia (Genus) Qian & Zhou, 1984, nom. illeg. - arthropod
ICZN:Aethotaxis (Genus) De Witt, 1962 - fish ICZN:Aethotaxis (Genus) Baesemann, 1973, nom. illeg. see (Genus) †Ubinates Baesemann & Purnell, 2000 - fish
ICZN:Aethria (Genus) Hübner, [1819] - moth ICZN:Aethria (Genus) Hübner, [1821], nom. illeg. - moth
ICZN:Aethria (Genus) Hübner, [1819] - moth ICZN:Aethria (Genus) Tosquinet, 1903, nom. illeg. see (Genus) Aethriella Schulz, 1911 - insect
ICZN:Aethria (Genus) Hübner, [1821], nom. illeg. - moth ICZN:Aethria (Genus) Tosquinet, 1903, nom. illeg. see (Genus) Aethriella Schulz, 1911 - insect
ICZN:Aetia (Genus) Agassiz, 1846 - invertebrate ICZN:Aetia (Genus) Chambers, 1880, nom. illeg. see (Genus) Chaetocampa Bottimer, 1926 - moth
ICZN:Africacarus (Genus) Viets, 1962 - mite ICZN:Africacarus (Genus) Wallwork, 1965, nom. illeg. see (Genus) Farchacarus Wallwork, 1967 - mite
ICZN:Africasia (Genus) Viets, 1931 - mite ICZN:Africasia (Genus) Rohdendorf, 1934, nom. illeg. see (Genus) Africasiomyia Rohdendorf, 1975 - fly
ICBN:Agaricomycotina (Subphylum) Doweld (2001) - fungus ICBN:Agaricomycotina (Subphylum) R. Bauer, Begerow, J.P. Samp., M. Weiß & Oberw. (2006), nom. illeg. see (Class) Basidiomycetes G. Winter (1880) - fungus
ICBN:Agaricus flavovirens Pers. (1793) see Tricholoma equestre (L.) P. Kumm. (1871) - fungus ICBN:Agaricus flavovirens Alb. & Schwein. (1805), nom. illeg. - fungus
ICBN:Agaricus flavovirens Pers. (1793) see Tricholoma equestre (L.) P. Kumm. (1871) - fungus ICBN:Agaricus flavovirens Cooke & Massee (1890), nom. illeg. see Insiticia flavovirens (Sacc.) E. Horak ex Segedin (1987) - fungus
ICBN:Agaricus squarrosus Vahl (1770) see Pholiota squarrosa (Vahl) P. Kumm. (1871) - fungus ICBN:Agaricus squarrosus Bull. (1780), nom. illeg. see Pholiota squarrosa (Vahl) P. Kumm. (1871) - fungus
ICBN:Agaricus squarrosus Vahl (1770) see Pholiota squarrosa (Vahl) P. Kumm. (1871) - fungus ICBN:Agaricus squarrosus Batsch (1786), nom. illeg. - fungus
ICBN:Agaricus squarrosus Vahl (1770) see Pholiota squarrosa (Vahl) P. Kumm. (1871) - fungus ICBN:Agaricus squarrosus Yu Li (1990), nom. illeg. - fungus
ICZN:Agassizia (Genus) Valenciennes, 1846 - echinoderm ICZN:Agassizia (Genus) Behr, 1870, nom. illeg. - moth
ICZN:Agathamminoides (Genus) Vangerow, 1964 - protist ICZN:Agathamminoides (Genus) Zaninetti, 1969, nom. illeg. see (Genus) †Gsollbergella Zaninetti, 1979 - protist
ICZN:Agnesia (Genus) de Koninck, 1883 - mollusc ICZN:Agnesia (Genus) Michaelsen, 1898, nom. illeg. see (Genus) Agnezia Monniot & Monniot, 1991 - invertebrate
ICBN:Ahnfeltia (Genus) E.M. Fr. (1835) - alga ICBN:Ahnfeldtia (Genus) Trevisan (1849), nom. illeg. - alga
ICBN:Aiora (Genus) Cookson & Eisenack (1960) - protist ICBN:Aiora (Genus) Davey (1978) - protist
ICBN:Akanthomyces (Genus) Lebert (1858) - fungus ICBN:Acanthomyces (Genus) Thaxt. (1892), nom. illeg. see (Genus) Rhachomyces Thaxt. (1895) - fungus
ICZN:Alaria (Genus) Duncan, 1841, nom. illeg. - insect ICZN:Alaria (Genus) Morris & Lycett, 1851, nom. illeg. see (Genus) Pterophorus Piette, 1891, nom. illeg. - mollusc
ICZN:Alaria (Genus) Schrank, 1788 - flatworm ICZN:Alaria (Genus) Morris & Lycett, 1851, nom. illeg. see (Genus) Pterophorus Piette, 1891, nom. illeg. - mollusc
ICZN:Alaria (Genus) Schrank, 1788 - flatworm ICZN:Alaria (Genus) Duncan, 1841, nom. illeg. - insect
ICZN:Albaniana (Genus) Rainbow & Pulleine, 1918 - arachnid ICZN:Albaniana (Genus) Radoman, 1973, nom. illeg. - mollusc
ICZN:Albula (Genus) Scopoli, 1777, nom. illeg. - fish ICZN:Albula (Genus) Röding, 1798, nom. illeg. - mollusc
ICZN:Aldania (Genus) Moore, 1896 - butterfly ICZN:Aldania (Genus) Vassiljeva, 1985, nom. illeg. - mollusc
ICZN:Aldingeria (Genus) Moy-Thomas, 1942 - fish ICZN:Aldingeria (Genus) Gross, 1942, nom. illeg. see (Genus) †Moythomasia Gross, 1950 - fish
ICZN:Alebion (Genus) Krøyer, 1863 - crustacean ICZN:Alebion (Genus) Gray, 1867, nom. illeg. see (Genus) Iophon Gray, 1867 - sponge
ICZN:Alexandria (Genus) Pfeffer, 1881 - echinoderm ICZN:Alexandria (Genus) Obolkina, 1995, nom. illeg. - protist
ICZN:Alexandria (Genus) Tomlin, 1926, nom. illeg. see (Genus) Alexania Strand, 1928 - mollusc ICZN:Alexandria (Genus) Obolkina, 1995, nom. illeg. - protist
ICZN:Alexandria (Genus) Pfeffer, 1881 - echinoderm ICZN:Alexandria (Genus) Tomlin, 1926, nom. illeg. see (Genus) Alexania Strand, 1928 - mollusc
ICBN:Alga (Genus) Boehm. (1760), nom. rej. see (Genus) Posidonia K.D. Koenig (1805) - plant ICBN:Alga (Genus) Adanson (1763), nom. illeg. see (Genus) Zostera L. (1753) - plant
ICZN:Allata (Genus) Walker, 1862 - moth ICZN:Allata (Genus) Walker, 1863, nom. illeg. - moth
ICZN:Allocosmia (Genus) Cossmann, 1897 - mollusc ICZN:Allocosmia (Genus) Sugi, 1982, nom. illeg. see (Genus) Imosca Sugi, 1984 - moth
ICZN:Allogenes (Genus) Gude, 1911 - mollusc ICZN:Allogenes (Genus) Andrewes, 1931, nom. illeg. see (Genus) Allophanes Andrewes, 1939 - beetle
ICZN:Allogenes (Subgenus) Gude, 1911 - mollusc ICZN:Allogenes (Genus) Andrewes, 1931, nom. illeg. see (Genus) Allophanes Andrewes, 1939 - beetle
ICZN:Allonychus (Genus) Zaitzev, 1905 - beetle ICZN:Allonychus (Genus) Pritchard & Baker, 1955, nom. illeg. - mite
ICZN:Allozercon (Genus) Vitzthum, 1926 - mite ICZN:Allozercon (Genus) Blaszak, 1984, nom. illeg. - mite
ICZN:Allozetes (Genus) Higgins, 1965, nom. illeg. see (Genus) Kalyptrazetes Balogh, 1972 - mite ICZN:Allozetes (Genus) Feider, Vasiliu & Calugar, 1971, nom. illeg. see (Genus) Feiderzetes Subias, 1977 - mite
ICZN:Allozetes (Genus) Berlese, 1913 - mite ICZN:Allozetes (Genus) Feider, Vasiliu & Calugar, 1971, nom. illeg. see (Genus) Feiderzetes Subias, 1977 - mite
ICZN:Allozetes (Genus) Berlese, 1913 - mite ICZN:Allozetes (Genus) Higgins, 1965, nom. illeg. see (Genus) Kalyptrazetes Balogh, 1972 - mite
ICZN:Allurus (Genus) Förster, 1862 - insect ICZN:Allurus (Genus) Eisen, 1873, nom. illeg. see (Genus) Eiseniella Michaelsen, 1900 - annelid
ICZN:Allurus (Genus) Förster, 1862 - insect ICZN:Allurus (Genus) Jordan & Evermann, 1896, nom. illeg. see (Genus) Allinectes Jordan & Evermann, 1898 - fish
ICZN:Allurus (Genus) Eisen, 1873, nom. illeg. see (Genus) Eiseniella Michaelsen, 1900 - annelid ICZN:Allurus (Genus) Jordan & Evermann, 1896, nom. illeg. see (Genus) Allinectes Jordan & Evermann, 1898 - fish
ICBN:Alnites (Genus) H.R. Göppert (1837) - plant ICBN:Alnites (Genus) H. Deane (1902), nom. illeg. - plant
ICBN:Alnites (Genus) W. Hisinger (1837), nom. illeg.? - plant ICBN:Alnites (Genus) H. Deane (1902), nom. illeg. - plant
ICBN:Alnites (Genus) H.R. Göppert (1837) - plant ICBN:Alnites (Genus) W. Hisinger (1837), nom. illeg.? - plant
ICZN:Alocodon (Genus) Thulborn, 1973, nom. dub. - dinosaur ICZN:Alocodon (Genus) Rose, Bown & Simons, 1977, nom. illeg. see (Genus) †Alocodontulum Rose, Bown & Simons, 1978 - mammal
ICZN:Altha (Genus) Walker, 1862 - moth ICZN:Altha (Genus) Neckaja, 1958, nom. illeg. see (Genus) Neckajatia Schallreuter, 1974 - crustacean
ICZN:Aluco (Genus) Link, 1807 - mollusc ICZN:Aluco (Genus) Fleming, 1822, nom. illeg. - bird
ICZN:Aluco (Genus) Link, 1807 - mollusc ICZN:Aluco (Genus) Martens, 1880, nom. illeg. - mollusc
ICZN:Aluco (Genus) Fleming, 1822, nom. illeg. - bird ICZN:Aluco (Genus) Martens, 1880, nom. illeg. - mollusc
ICZN:Aluta (Genus) Matthew, 1896 - arachnid ICZN:Aluta (Genus) Jekelius, 1932, nom. illeg. - mollusc
ICZN:Alvania (Genus) Risso, 1826 - mollusc ICZN:Alvania (Genus) Beddard, 1893, nom. illeg., nom. dub. - annelid
ICZN:Alveolites (Genus) Lamarck, 1801 - invertebrate ICZN:Alveolites (Genus) Defrance, 1816, nom. illeg. see (Genus) †Alveolina d'Orbigny, 1826 - protist
ICZN:Alycus (Genus) Rafinesque, 1815 see (Genus) Lycus Fabricius, 1787 - beetle ICZN:Alycus (Genus) Koch, 1842, nom. illeg. see (Genus) Alychus Canestrini & Fanzago, 1877 - mite
ICZN:Amalthea (Genus) Rafinesque, 1815 - bee ICZN:Amalthea (Genus) Schumacher, 1817, nom. illeg. - mollusc
ICZN:Amaltheidae (Family) Hyatt, 1867 - mollusc ICZN:Amaltheidae (Family) Dall, 1889, nom. illeg. see (Family) Hipponicidae Troschel, 1861 - mollusc
ICZN:Amasis (Genus) Leach, 1817, nom. illeg. - insect ICZN:Amasis (Genus) Chapuis, 1874, nom. illeg. see (Genus) Hylax Lefèvre, 1884, nom. illeg. - beetle
ICZN:Amasis (Genus) Leach, 1817, nom. illeg. - insect ICZN:Amasis (Genus) Nordenskiöld, 1905, nom. illeg. see (Genus) Sigthoria Koenike, 1907 - mite
ICZN:Amasis (Genus) Chapuis, 1874, nom. illeg. see (Genus) Hylax Lefèvre, 1884, nom. illeg. - beetle ICZN:Amasis (Genus) Nordenskiöld, 1905, nom. illeg. see (Genus) Sigthoria Koenike, 1907 - mite
ICZN:Amasis (Genus) Chapuis, 1874, nom. illeg. see (Genus) Hylax Lefèvre, 1884, nom. illeg. - beetle ICZN:Amasis (Genus) Sörensen, 1910, nom. illeg. see (Genus) Amasilla Strand, 1911 - arachnid
ICZN:Amasis (Genus) Nordenskiöld, 1905, nom. illeg. see (Genus) Sigthoria Koenike, 1907 - mite ICZN:Amasis (Genus) Sörensen, 1910, nom. illeg. see (Genus) Amasilla Strand, 1911 - arachnid
ICZN:Amasis (Genus) Leach, 1817, nom. illeg. - insect ICZN:Amasis (Genus) Sörensen, 1910, nom. illeg. see (Genus) Amasilla Strand, 1911 - arachnid
ICZN:Amastus (Genus) Walker, 1855 - moth ICZN:Amastus (Genus) Motschoulsky, 1865, nom. illeg. - beetle
ICBN:Amauroderma (Genus) Murrill (1905) - fungus ICBN:Amauroderma (Genus) (Pat.) Torrend (1920), nom. illeg. - fungus
ICBN:Amblytropis (Genus) (Mitt.) Broth. (1907) - plant ICBN:Amblytropis (Genus) Kitagawa (1936), nom. illeg. see (Genus) Gueldenstaedtia F.E.L. Fisch. (1823) - plant
ICZN:Amblyzancla (Genus) Turner, 1936 - moth ICZN:Amblyzancla (Genus) Turner, 1939, nom. illeg. - moth
ICZN:Amerus (Genus) Berlese, 1883 - mite ICZN:Amerus (Genus) Collinge & Shoebotham, 1909, nom. illeg. - arthropod
ICZN:Amesia (Genus) Duncan, 1841 - moth ICZN:Amesia (Genus) Robineau-Desvoidy, 1863, nom. illeg. - fly
ICBN:Amesia (Genus) A. Nelson & J.F. Macbr. (1913) - plant ICBN:Amesia (Genus) X. Wei Wang, Samson & Crous (2016), nom. illeg. - fungus
ICZN:Ammoconia (Genus) Lederer, 1857 - moth ICZN:Ammoconia (Genus) Haeckel, 1889, nom. illeg. - protozoan
ICZN:Amolops (Genus) Cope, 1865 - amphibian ICZN:Amolops (Genus) Hull, 1916, nom. illeg. see (Subgenus) Insculptoppia Subías, 1980 - mite
ICZN:Amphiblestrum (Genus) Gray, 1848 - invertebrate ICZN:Amphiblestrum (Genus) Schrammen, 1937, nom. illeg. see (Genus) †Xenoschrammenum de Laubenfels, 1955 - sponge
ICZN:Amphibrachium (Genus) Schulze, 1880 see (Genus) Bibrachium Stechow, 1919 - invertebrate ICZN:Amphibrachium (Genus) Haeckel, 1881, nom. illeg. - protist
ICBN:Amphisolenia bidentata Schröder (1900) - protist ICBN:Amphisolenia bidentata Pavillard (1916) see Amphisolenia palmata Stein (1883) - protist
ICBN:Amphisolenia bidentata Schröder (1900) - protist ICBN:Amphisolenia bidentata Pavillard (1916) see Amphisolenia palmata Stein (1883) - protist
ICBN:Amphisolenia bidentata Okamura (1907) - protist ICBN:Amphisolenia bidentata Pavillard (1916) see Amphisolenia palmata Stein (1883) - protist
ICBN:Amphisolenia bidentata Schröder (1900) - protist ICBN:Amphisolenia bidentata Okamura (1907) - protist
ICBN:Amphisolenia bidentata Schröder (1900) - protist ICBN:Amphisolenia bidentata Okamura (1907) - protist
ICBN:Amphisolenia thrinax Schütt (1893) - protist ICBN:Amphisolenia thrinax Zacharias (1906) see Amphisolenia bifurcata Murray & Whitting (1899) - protist
ICZN:Amphistylus (Genus) Haeckel, 1881 - protist ICZN:Amphistylus (Genus) Gahan, 1890, nom. illeg. - beetle
ICBN:Amphora (Genus) Ehrenb. (1840) - alga ICBN:Amphora (Genus) H. Willems (1994) see (Genus) †Coronadinium H. Willems (1998) - protist
ICBN:Amphora (Genus) Ehrenb. (1840) - alga ICBN:Amphora (Genus) H. Willems (1994) see (Genus) †Coronadinium H. Willems (1998) - protist
ICZN:Amphorella (Genus) Lowe, 1852 - mollusc ICZN:Amphorella (Genus) Borza & Samuel, 1977, nom. illeg. see (Genus) †Spiriamphorella Borza & Samuel, 1977 - protist
ICZN:Amphorella (Genus) Léger, 1892, nom. illeg. see (Genus) Amphoroides Labbé, 1899 - protozoan ICZN:Amphorella (Genus) Borza & Samuel, 1977, nom. illeg. see (Genus) †Spiriamphorella Borza & Samuel, 1977 - protist
ICZN:Amphorella (Subgenus) Lowe, 1852 - mollusc ICZN:Amphorella (Genus) Borza & Samuel, 1977, nom. illeg. see (Genus) †Spiriamphorella Borza & Samuel, 1977 - protist
ICZN:Amphorella (Genus) Lowe, 1852 - mollusc ICZN:Amphorella (Genus) Léger, 1892, nom. illeg. see (Genus) Amphoroides Labbé, 1899 - protozoan
ICZN:Amphorella (Subgenus) Lowe, 1852 - mollusc ICZN:Amphorella (Genus) Léger, 1892, nom. illeg. see (Genus) Amphoroides Labbé, 1899 - protozoan
ICZN:Amphorina (Genus) de Quatrefages, 1844 see (Genus) Eubranchus Forbes, 1838 - mollusc ICZN:Amphorina (Genus) d'Orbigny, 1849, nom. illeg. see (Genus) Hyalinonetrion Patterson & Richardson, 1988 - protist
ICBN:Amphorula (Genus) Grove (1922) see (Genus) Chaetoconis Clem. (1909) - fungus ICBN:Amphorula (Genus) Dodekova (1969) - protist
ICZN:Ampullina (Genus) Bowdich, 1822 - mollusc ICZN:Ampullina (Genus) Guppy, 1895, nom. illeg. - mollusc
ICZN:Anachoreta (Genus) Gistl, 1848 - insect ICZN:Anachoreta (Genus) O'Dogherty, 1994, nom. illeg. - protist
ICZN:Anagnia (Genus) Walker, 1854 - moth ICZN:Anagnia (Genus) Stål, 1861, nom. illeg. see (Genus) Kareol Kirkaldy, 1904 - bug
ICZN:Anahuacia (Genus) Hoffmann, 1963 - mite ICZN:Anahuacia (Genus) Grundel, 1972, nom. illeg. - crustacean
ICZN:Anatinella (Genus) Sowerby, 1833 - mollusc ICZN:Anatinella (Genus) Spassky & Spasskaja, 1954, nom. illeg. - flatworm
Zoology:Anaua (Genus) Stål, 1878 - insect ICZN:Anaua (Genus) Forster, 1970, nom. illeg. see (Genus) Uzakia Koçak & Kemal, 2008 - arachnid
ICZN:Anchinia (Genus) Hübner, 1825 - moth ICZN:Anchinia (Genus) Eschscholtz, 1829, nom. illeg. - invertebrate
ICZN:Anchiphyllia (Genus) Butler, 1893 - moth ICZN:Anchiphyllia (Genus) Warren, 1895, nom. illeg. see (Genus) Anchiphyllia Butler, 1893 - moth
ICZN:Ancistrochirus (Genus) Leach, 1820 see (Genus) Onychoteuthis Lichtenstein, 1818 - mollusc ICZN:Ancistrochirus (Genus) Hoyle, 1910, nom. illeg. see (Genus) Ancistrocheirus Gray, 1849 - mollusc
ICZN:Ancylini (Tribe) Rafinesque, 1815 - mollusc ICZN:Ancylini (Tribe) Michener, 1944, nom. illeg. - bee
ICZN:Andania (Genus) Walker, 1860 - moth ICZN:Andania (Genus) Boeck, 1871, nom. illeg. see (Genus) Andaniexis Stebbing, 1906 - crustacean
ICBN:Andreaea (Genus) J. Hedwig (1801) - plant ICBN:Andreaea (Genus) Palm & Jochems (1923), nom. illeg. see (Genus) Andreaeana Palm & Jochems (1924) - fungus
ICZN:Andresia (Genus) Stephenson, 1921 - invertebrate ICZN:Andresia (Genus) Hinz-Schallreuter, 1993, nom. illeg. see (Genus) †Dietmarandresia Hinz-Schallreuter, 2008 - arthropod
ICZN:Andresia (Genus) Prenant, 1924, nom. illeg. see (Genus) Harmothoe Kinberg, 1855 - annelid ICZN:Andresia (Genus) Hinz-Schallreuter, 1993, nom. illeg. see (Genus) †Dietmarandresia Hinz-Schallreuter, 2008 - arthropod
ICZN:Andresia (Genus) Stephenson, 1921 - invertebrate ICZN:Andresia (Genus) Prenant, 1924, nom. illeg. see (Genus) Harmothoe Kinberg, 1855 - annelid
ICZN:Andrusovia (Genus) Brusina, 1903 - mollusc ICZN:Andrusovia (Genus) Dovgal, 2002, nom. illeg. - protist
ICZN:Anemeca (Genus) Kirby, 1871 - butterfly ICZN:Anemeca (Genus) Shcherbakov, 1995, nom. illeg. - fly
ICZN:Angasia (Genus) Bate, 1864 - crustacean ICZN:Angasia (Genus) Dall, 1882, nom. illeg. see (Genus) Phacellozona Pilsbry, 1894 - mollusc
ICZN:Angela (Genus) Audinet-Serville, 1838 - insect ICZN:Angela (Genus) Lesson, 1843, nom. illeg. see (Genus) Anga Stechow, 1921 - invertebrate
ICZN:Angela (Genus) Lesson, 1843, nom. illeg. see (Genus) Anga Stechow, 1921 - invertebrate ICZN:Angela (Genus) González-Sponga, 1987, nom. illeg. see (Genus) Leptostygnus Mello-Leitão, 1940 - arachnid
ICZN:Angela (Genus) Audinet-Serville, 1838 - insect ICZN:Angela (Genus) González-Sponga, 1987, nom. illeg. see (Genus) Leptostygnus Mello-Leitão, 1940 - arachnid
ICZN:Angelia (Genus) Berlese, 1885 see (Genus) Lohmannia Michael, 1898 - mite ICZN:Angelia (Genus) Lower, 1903, nom. illeg. - moth
ICZN:Angitia (Genus) Holmgren, 1858 - wasp ICZN:Angitia (Genus) Walker, 1858, nom. illeg. see (Genus) Blancharditia Biezanko & Ruffinelli, 1963 - moth
ICZN:Anisocycla (Genus) Monterosato, 1880 - mollusc ICZN:Anisocycla (Genus) Cossmann, 1888, nom. illeg. see (Genus) Belonidium Cossmann, 1892 - mollusc
ICZN:Anisogaster (Genus) Deyrolle, 1862 - beetle ICZN:Anisogaster (Genus) Blakemore, 2000, nom. illeg. - annelid
ICZN:Anisoneura (Genus) Guenée, 1852 - moth ICZN:Anisoneura (Genus) de Selys Longchamps, 1859, nom. illeg. see (Genus) Philoganga Kirby, 1890 - insect
ICZN:Anisoxya (Genus) Mulsant, 1856 - beetle ICZN:Anisoxya (Genus) Topsent, 1898, nom. illeg. see (Genus) Topsentia Berg, 1899 - sponge
ICBN:Anixia (Genus) Fr. (1819), nom. dub. - fungus ICBN:Anixia (Genus) H. Hoffm. (1862) see (Genus) Orbicula Cooke (1871) - fungus
ICZN:Annandalea (Genus) Bolivar, 1905 - insect ICZN:Annandalea (Genus) Topsent, 1928, nom. illeg. see (Genus) Thoosa Hancock, 1849 - sponge
ICBN:Anodon (Genus) Rabenhorst (1848) - plant ICZN:Anodon (Genus) Fairmaire, 1871, nom. illeg. see (Genus) Paranodon Cockerell, 1905 - beetle
ICZN:Anodontinae (Subfamily) Rafinesque, 1820 see (Tribe) Anodontini Rafinesque, 1820 - mollusc ICZN:Anodontinae (Subfamily) nom. illeg. see (Subfamily) Anodinae Bleeker, 1859, nom. emend. - fish
ICZN:Anomalipes (Genus) Guérin, 1832 - beetle ICZN:Anomalipes (Genus) Yu, Wang, Chen, Sullivan, Wang, Wang & Xu, 2018, nom. illeg. - dinosaur
ICZN:Anomalorbis (Genus) Vine, 1972 - annelid ICZN:Anomalorbis (Genus) Paul, 1991, nom. illeg. see (Genus) †Anomalorbina Paul, 1996 - mollusc
ICZN:Anomis aroa Bethune-Baker, 1906 - moth ICZN:Anomis aroa Bethune-Baker, 1908, nom. illeg. - moth
ICZN:Anomphalus (Genus) Meek & Worthen, 1866 - mollusc ICZN:Anomphalus (Genus) Dybowski & Grochmalicki, 1925, nom. illeg. see (Subgenus) Anomphalodes Tomlin, 1929 - mollusc
ICZN:Anoplonotus (Genus) Smith, 1883 - crustacean ICZN:Anoplonotus (Genus) Trouessart, 1916, nom. illeg. see (Genus) Inermodorsus Gaud & Mouchet, 1959 - mite
ICZN:Anotis (Genus) Rafinesque, 1815 - mammal ICZN:Anotis (Genus) Bavay, 1869, nom. illeg. - reptile
ICZN:Ansorgia (Genus) Warren, 1899 - moth ICZN:Ansorgia (Genus) Boulenger, 1912, nom. illeg. - fish
ICBN:Antennaria (Genus) Gaertn. (1791), nom. cons. - plant ICBN:Antennaria (Genus) Link (1809), nom. sanct., nom. rej. - fungus
ICZN:Antenor (Genus) de Montfort, 1808 see (Genus) Lenticulina Lamarck, 1804 - protist ICZN:Antenor (Genus) Ridgway, 1873, nom. illeg. see (Genus) Parabuteo Ridgway, 1874 - bird
ICZN:Anthodes (Genus) Dognin, 1914 - moth ICZN:Anthodes (Genus) Hampson, 1918, nom. illeg. see (Genus) Anthodes Dognin, 1914 - moth
ICZN:Anthometra (Genus) Boisduval, 1840 - moth ICZN:Anthometra (Genus) Clark, 1915, nom. illeg. - echinoderm
ICBN:Anthomyces (Genus) Dietel (1899) - fungus ICBN:Anthomyces (Genus) Grüss (1918), nom. illeg. - fungus
ICZN:Anthracia (Genus) Hübner, 1823 - moth ICZN:Anthracia (Genus) Meigen, 1838, nom. illeg. - fly
ICZN:Antiopa (Genus) Meigen, 1800 - fly ICZN:Antiopa (Genus) Alder & Hancock, 1848, nom. illeg. see (Genus) Antiopella Hoyle, 1902 - mollusc
ICZN:Antiora (Genus) Walker, 1856 - moth ICZN:Antiora (Genus) Möschler, 1882, nom. illeg. see (Genus) Pseudantiora Kirby, 1892 - moth
ICZN:Antonella (Genus) Cooke & Kondo, 1960 - mollusc ICZN:Antonella (Genus) Astafieva-Urbajtis & Ramovs, 1985, nom. illeg. - mollusc
ICBN:Aphanostelma (Genus) Schlechter (1914-1915) - plant ICBN:Aphanostelma (Genus) Malme (1933) see (Genus) Melinia Decaisne (1844) - plant
ICZN:Aphareus (Genus) Cuvier & Valenciennes, 1830 - fish ICZN:Aphareus (Genus) Paulson, 1875, nom. illeg. see (Genus) Sicyonella Borradaile, 1910 - crustacean
ICZN:Aphrodite (Genus) Leske, 1775 see (Genus) Aphrodita Linnaeus, 1758 - annelid ICZN:Aphrodite (Genus) Lendenfeld, 1886, nom. illeg. see (Genus) Hippospongia Schulze, 1879 - sponge
ICZN:Aplodontidae (Family) Trouessart, 1897, orth. inval. see (Family) Aplodontiidae Brandt, 1855 - mammal ICZN:Aplodontidae (Family) Kuroda, 1933, nom. illeg. see (Family) Modulidae Fischer, 1884 - mollusc
ICZN:Aplysia (Genus) Linnaeus, 1767 - mollusc ICZN:Aplysia (Genus) Nardo, 1833, nom. illeg. see (Genus) Aplysina Nardo, 1834 - sponge
Zoology:Apoda (Order) Oppel, 1810 see (Order) Gymnophiona Rafinesque, 1814 - amphibian Zoology:Apoda (Order) Darwin, 1854 see (Order) Darwinida Lakshminarayana & Rama Rao, 1977 - arthropod
ICZN:Aporina (Genus) Fuhrmann, 1902 - flatworm ICZN:Aporina (Genus) Gussakovskii, 1937, nom. illeg. - insect
ICZN:Apotetranychus (Genus) Oudemans, 1931 see (Genus) Eotetranychus Oudemans, 1931 - mite ICZN:Apotetranychus (Genus) Zacher, 1933, nom. illeg. - arachnid
ICBN:Appendicospora (Genus) K.D. Hyde (1995) - fungus ICBN:Appendicispora (Genus) Spain, Oehl & Sieverd. (2006), nom. illeg. see (Genus) Ambispora C. Walker, Vestberg & A. Schüßler (2007) - fungus
ICZN:Aptyxis (Genus) Troschel, 1868 - mollusc ICZN:Aptyxis (Genus) Zittel, 1873, nom. illeg. see (Genus) †Aptyxiella Fischer, 1885 - mollusc
ICZN:Aptyxis (Subgenus) Troschel, 1868 - mollusc ICZN:Aptyxis (Genus) Zittel, 1873, nom. illeg. see (Genus) †Aptyxiella Fischer, 1885 - mollusc
ICZN:Aptyxis (Subgenus) Troschel, 1868 - mollusc ICZN:Aptyxis (Genus) Pcelinzev, 1928, nom. illeg. - mollusc
ICZN:Aptyxis (Genus) Troschel, 1868 - mollusc ICZN:Aptyxis (Genus) Pcelinzev, 1928, nom. illeg. - mollusc
ICZN:Aptyxis (Genus) Zittel, 1873, nom. illeg. see (Genus) †Aptyxiella Fischer, 1885 - mollusc ICZN:Aptyxis (Genus) Pcelinzev, 1928, nom. illeg. - mollusc
ICZN:Apyre (Genus) Walker, 1854 - moth ICZN:Apyre (Genus) Simon, 1895, nom. illeg. see (Genus) Apyretina Strand, 1929 - arachnid
ICBN:Arachniopsis (Genus) Spruce (1882) - plant ICBN:Arachniopsis (Genus) Long (1917) - fungus
ICZN:Araeopaschia (Genus) Hampson, 1906 - moth ICZN:Araeopaschia (Genus) Hampson, 1916, nom. illeg. see (Genus) Geropaschia Hampson, 1917 - moth
ICZN:Aragonella (Genus) Thalmann, 1942 - protist ICZN:Aragonella (Genus) Calvez, 1989, nom. illeg. - protozoan
ICZN:Aragonella (Genus) Thalmann, 1942 - protist ICZN:Aragonella (Genus) Gozalo, 1994, nom. illeg. - crustacean
ICZN:Aragonella (Genus) Calvez, 1989, nom. illeg. - protozoan ICZN:Aragonella (Genus) Gozalo, 1994, nom. illeg. - crustacean
ICBN:Araliopsis (Genus) Engler (1896), nom. cons. - plant ICBN:Araliopsis (Genus) E.W. Berry (1911), nom. illeg. see (Genus) †Araliopsoides E.W. Berry (1916) - plant
ICZN:Aranea (Genus) Linnaeus, 1758 - arachnid ICZN:Aranea (Genus) Perry, 1810, nom. illeg. - mollusc
ICZN:Araucania (Genus) Chamberlin, 1956 - arachnid ICZN:Araucania (Genus) Brundin, 1966, nom. illeg. - fly
ICZN:Arborella (Genus) Osburn, 1914 - invertebrate ICZN:Arborella (Genus) Gatehouse, 1967, nom. illeg. see (Genus) †Rankenella Kruse, 1983 - sponge
ICZN:Archaeaspis (Genus) Repina, 1965 - arthropod ICZN:Archaeaspis (Genus) Ivantsov, 2001, nom. illeg. see (Genus) †Archaeaspinus Ivantsov, 2007 - invertebrate
ICZN:Archaeocenosphaera (Genus) Pessagno & Yang, 1989 - protist ICZN:Archaeocenosphaera (Genus) Obut & Iwata, 2000, nom. illeg. - protist
ICZN:Archaeoryctes (Genus) Czerniavsky, 1880 - annelid ICZN:Archaeoryctes (Genus) Zheng, 1979, nom. illeg. - mammal
ICZN:Arctopsis (Genus) Barnard, 1920, nom. illeg. - crustacean ICZN:Arctopsis (Genus) Athias-Henriot, 1973, nom. illeg. - mite
ICZN:Arctus (Genus) De Haan, 1849 see (Genus) Scyllarus Fabricius, 1775 - crustacean ICZN:Arctus (Genus) Dana, 1852, nom. illeg. see (Genus) Scyllarus Fabricius, 1775 - crustacean
ICZN:Ardelia (Genus) Melichar, 1907 - bug ICZN:Ardelia (Genus) Chamberlain & Baer, 1973, nom. illeg. - crustacean
ICZN:Arenovidalina (Genus) He, 1959 - protist ICZN:Arenovidalina (Genus) Baryshnikov, Zolotova & Kosheleva, 1982, nom. illeg. see (Genus) †Uralogordius Gaillot & Vachard, 2007 - protist
ICZN:Argiope (Genus) Audouin, 1827, orth. cons. - arachnid ICZN:Argiope (Genus) Chambers, 1873, nom. illeg. see (Genus) Acrolepiopsis Gaedike, 1970 - moth
ICZN:Argyria (Genus) Hübner, 1818 - moth ICZN:Argyria (Genus) Robineau-Desvoidy, 1863, nom. illeg. - fly
ICZN:Ariocaelatura (Genus) Germain, 1921 - mollusc ICZN:Ariocaelatura (Genus) Thiele, 1931, nom. illeg. see (Genus) Pseudocaelatura Wenz, 1947, nom. illeg. - mollusc
ICZN:Armandiella (Genus) Ancey, 1901 - mollusc ICZN:Armandiella (Genus) McIntosh, 1915, nom. illeg. - annelid
ICZN:Arnoldina (Subgenus) Hannibal, 1912 - mollusc ICZN:Arnoldina (Genus) Jordan & Gilbert, 1919, nom. illeg. see (Genus) †Arnoldites Jordan, 1923 - fish
ICZN:Aroa (Genus) Walker, 1855 - moth ICZN:Aroa (Genus) Baker, 1930, nom. illeg. see (Genus) Aroapyrgus Baker, 1931 - mollusc
ICZN:Artena (Genus) Walker, 1858 - moth ICZN:Artena (Genus) Conrad, 1870, nom. illeg. - mollusc
ICZN:Arthropterus (Genus) M'Leay, 1838 - beetle ICZN:Arthropterus (Genus) Agassiz, 1843, nom. illeg. see (Genus) †Arthrobatis Whitley, 1940 - fish
ICZN:Artopera (Genus) Haeckel, 1881 - protist ICZN:Artopera (Genus) Haeckel, 1887, nom. illeg. see (Genus) †Artoperina Campbell, 1951 - protist
ICBN:Arundinella (Genus) Raddi (1823) - plant ICBN:Arundinella (Genus) L. Léger & Duboscq (1905) see (Genus) Arundinula L. Léger & Duboscq (1906) - fungus
ICZN:Arythaena (Genus) Deshayes, 1830 see (Genus) Arytene Oken, 1815 - mollusc ICZN:Arythaena (Genus) Menge, 1854, nom. illeg. - mite
ICZN:Asbolia (Genus) Herrich-Schäffer, 1856 - moth ICZN:Asbolia (Genus) Möschler, 1872, nom. illeg. - moth
ICBN:Ascidium (Genus) Tode (1782), nom. dub. - fungus ICBN:Ascidium (Genus) Fée (1824), nom. illeg., nom. rej. - fungus
ICBN:Ascomycetella (Genus) Peck (1881) - fungus ICBN:Ascomycetella (Genus) Sacc. (1886) - fungus
ICZN:Ascuris (Genus) Haeckel, 1872 see (Genus) Leucosolenia Bowerbank, 1863 - sponge ICZN:Ascuris (Genus) Simon, 1897, nom. illeg. - arachnid
ICZN:Asopus (Genus) Burmeister, 1834 - bug ICZN:Asopus (Genus) Burmeister, 1834, nom. illeg. - bug
ICZN:Asopus (Genus) Burmeister, 1834 - bug ICZN:Asopus (Genus) Sørensen, 1896, nom. illeg. see (Genus) Sörensenius Berg, 1898, orth. inval. - arachnid
ICZN:Asopus (Genus) Burmeister, 1834, nom. illeg. - bug ICZN:Asopus (Genus) Sørensen, 1896, nom. illeg. see (Genus) Sörensenius Berg, 1898, orth. inval. - arachnid
ICZN:Aspa (Genus) Adams & Adams, 1853 - mollusc ICZN:Aspa (Genus) Walker, 1854, nom. illeg. - moth
ICZN:Aspa (Subgenus) Adams & Adams, 1853 - mollusc ICZN:Aspa (Genus) Walker, 1854, nom. illeg. - moth
ICBN:Aspergillopsis (Genus) Speg. (1910) see (Genus) Aspergillus P. Micheli ex Haller (1768), nom. sanct. - fungus ICBN:Aspergillopsis (Genus) Sopp (1912), nom. illeg., nom. dub. - fungus
ICBN:Aspidella (Genus) Billings (1872) - fungus ICBN:Aspidella (Genus) E.-J. Gilbert (1940), nom. illeg. see (Genus) Amanita Pers. (1797), nom. cons. - fungus
ICZN:Aspidopleurus (Genus) Pictet & Humbert, 1866 - fish ICZN:Aspidopleurus (Genus) Sars, 1891, nom. illeg. see (Genus) Phippsia Stebbing, 1906 - crustacean
ICZN:Aspidorhynchus (Genus) Agassiz, 1833 - fish ICZN:Aspidorhynchus (Genus) Molin, 1858, nom. illeg. see (Genus) Nybelinia Poche, 1926 - flatworm
ICZN:Aspina (Genus) Tripathi, 1956 - flatworm ICZN:Aspina (Genus) Kozhanchikov, 1960, nom. illeg. - moth
ICZN:Aspredo (Genus) Scopoli, 1777 - fish ICZN:Aspredo (Genus) Swainson, 1838, nom. illeg. see (Genus) Bunocephalus Kner, 1855 - fish
ICZN:Assamia (Genus) Sørensen, 1884 - arachnid ICZN:Assamia (Genus) Buckton, 1896, nom. illeg. see (Genus) Proutista Kirkaldy, 1904 - bug
ICZN:Assamia (Genus) Sørensen, 1884 - arachnid ICZN:Assamia (Genus) Dayal & Gupta, 1974, nom. illeg. see (Genus) †Satyapalia Lakshminarayana & Hafeezullah, 1974 - flatworm
ICZN:Assamia (Genus) Buckton, 1896, nom. illeg. see (Genus) Proutista Kirkaldy, 1904 - bug ICZN:Assamia (Genus) Dayal & Gupta, 1974, nom. illeg. see (Genus) †Satyapalia Lakshminarayana & Hafeezullah, 1974 - flatworm
ICZN:Assamia (Genus) Gupta, 1955, nom. illeg. - flatworm ICZN:Assamia (Genus) Dayal & Gupta, 1974, nom. illeg. see (Genus) †Satyapalia Lakshminarayana & Hafeezullah, 1974 - flatworm
ICZN:Assamia (Genus) Sørensen, 1884 - arachnid ICZN:Assamia (Genus) Gupta, 1955, nom. illeg. - flatworm
ICZN:Assamia (Genus) Buckton, 1896, nom. illeg. see (Genus) Proutista Kirkaldy, 1904 - bug ICZN:Assamia (Genus) Gupta, 1955, nom. illeg. - flatworm
ICZN:Astasiella (Genus) Skvortzow, 1958 - protozoan ICZN:Astasiella (Genus) Michajlow, 1965, nom. illeg. see (Genus) Parastasiella Michajlow, 1965 - protist
ICBN:Asteriscium (Genus) Chamisso & D.F.L. Schlechtendal (1826) - plant ICBN:Asteriscium (Genus) Corda (1839), nom. illeg. - alga
ICBN:Asteriscium (Genus) Chamisso & D.F.L. Schlechtendal (1826) - plant ICBN:Asteriscium (Genus) Hilpert (1933), nom. illeg. - plant
ICBN:Asteriscium (Genus) Corda (1839), nom. illeg. - alga ICBN:Asteriscium (Genus) Hilpert (1933), nom. illeg. - plant
ICBN:Asterocystis (Genus) Gobi (1879) - alga ICBN:Asterocystis (Genus) De Wild. (1893) see (Genus) Olpidium (A. Braun) Rabenh. (1868) - fungus
ICZN:Asterodiscus (Genus) Ehrenberg, 1839 see (Genus) Planorbulina d'Orbigny, 1826 - protist ICZN:Asterodiscus (Genus) Gray, 1847, nom. illeg. see (Genus) Asterodiscides Clark, 1974 - echinoderm
ICZN:Asterodiscus (Genus) Gray, 1847, nom. illeg. see (Genus) Asterodiscides Clark, 1974 - echinoderm ICZN:Asterodiscus (Genus) Schafhäutl, 1863, nom. illeg. see (Genus) †Asterocyclina Gümbel, 1868 - protist
ICZN:Asterodiscus (Genus) Ehrenberg, 1839 see (Genus) Planorbulina d'Orbigny, 1826 - protist ICZN:Asterodiscus (Genus) Schafhäutl, 1863, nom. illeg. see (Genus) †Asterocyclina Gümbel, 1868 - protist
ICZN:Asterope (Genus) Hübner, 1819 - butterfly ICZN:Asterope (Genus) Mueller & Troschel, 1840, nom. illeg. see (Genus) Asteropsis Mueller & Troschel, 1840 - echinoderm
ICZN:Asterope (Genus) Hübner, 1819 - butterfly ICZN:Asterope (Genus) Philippi, 1840, nom. illeg. see (Genus) Cylindroleberis Brady, 1867 - crustacean
ICBN:Asterophora (Genus) Ditmar (1809), nom. sanct. - fungus ICBN:Asterophora (Genus) Corda (1840), nom. illeg. see (Genus) Asterophora Ditmar (1809), nom. sanct. - fungus
ICBN:Asterophora (Genus) Ditmar (1809), nom. sanct. - fungus ICBN:Asterophora (Genus) Fr. (1849), nom. illeg. see (Genus) Asterophora Ditmar (1809), nom. sanct. - fungus
ICBN:Asterophora (Genus) Corda (1840), nom. illeg. see (Genus) Asterophora Ditmar (1809), nom. sanct. - fungus ICBN:Asterophora (Genus) Fr. (1849), nom. illeg. see (Genus) Asterophora Ditmar (1809), nom. sanct. - fungus
ICBN:Asterothyrium (Genus) Müll. Arg. (1890) - fungus ICBN:Asterothyrium (Genus) Henn. (1904), nom. illeg. see (Genus) Septothyrella Höhn. (1911) - fungus
ICZN:Asthenia (Genus) Westwood, 1841, nom. illeg. see (Genus) Asthenidia Westwood, 1879 - moth ICZN:Asthenia (Genus) Westwood, 1842, nom. illeg. - fly
ICZN:Asticta (Genus) Hübner, 1823 - moth ICZN:Asticta (Genus) Newman, 1838, nom. illeg. - insect
ICZN:Asticta (Genus) Hübner, 1823 - moth ICZN:Asticta (Genus) Wasmann, 1916, nom. illeg. - beetle
ICZN:Asticta (Genus) Newman, 1838, nom. illeg. - insect ICZN:Asticta (Genus) Wasmann, 1916, nom. illeg. - beetle
ICZN:Astraeodes (Genus) Staudinger, 1887 - butterfly ICZN:Astraeodes (Genus) Röber, 1892 see (Genus) Astraeodes Staudinger, 1887 - butterfly
ICBN:Astrosporina (Genus) J. Schröt. (1889) see (Genus) Inocybe (Fr.) Fr. (1863) - fungus ICBN:Astrosporina (Genus) S. Imai (1938), nom. illeg. see (Genus) Inocybe (Fr.) Fr. (1863) - fungus
ICZN:Asychis (Genus) Kinberg, 1866 - annelid ICZN:Asychis (Genus) Gray, 1867, nom. illeg. see (Subgenus) Gellius Gray, 1867 - sponge
ICZN:Atea (Genus) Koch, 1837 - arachnid ICZN:Atea (Subgenus) Pilsbry & Cooke, 1933, nom. illeg. see (Subgenus) Auhea Kondo, 1962 - mollusc
ICZN:Athis (Genus) Hübner, 1819 - moth ICZN:Athis (Genus) Hübner, 1819 sensu Houlbert, 1918 see (Genus) Hista Oiticica Filho, 1954 - moth
ICZN:Athrodon (Genus) Sauvage, 1880 - fish ICZN:Athrodon (Genus) Osborn, 1887, nom. illeg. see (Genus) †Kurtodon Osborn, 1887 - mammal
ICZN:Atilia (Genus) Adams & Adams, 1853 - fly ICZN:Atilia (Genus) Robineau-Desvoidy, 1863, nom. illeg. - mollusc
ICZN:Atractotrema (Genus) Cossmann, 1888 - mollusc ICZN:Atractotrema (Genus) Goto & Ozaki, 1929, nom. illeg. - flatworm
ICZN:Atrephes (Genus) Jones, 1908 - moth ICZN:Atrephes (Genus) Hampson, 1908, nom. illeg. see (Genus) Atrephes Jones, 1908 - moth
ICZN:Atreus (Subgenus) Gervais, 1843 - arachnid ICZN:Atreus (Genus) Grote, 1886, nom. illeg. see (Genus) Atreides Holland, 1903 - moth
ICZN:Atriotaenia (Genus) Sandground, 1926 - flatworm ICZN:Atriotaenia (Genus) Spasski, 1951, nom. illeg. - flatworm
ICZN:Atropis (Genus) Glückselig, 1851 - reptile ICZN:Atropis (Genus) Kirschbaum, 1867, nom. illeg. - bug
ICZN:Atropis (Genus) Glückselig, 1851 - reptile ICZN:Atropis (Subgenus) Pease, 1871, nom. illeg. - mollusc
ICZN:Atropis (Genus) Kirschbaum, 1867, nom. illeg. - bug ICZN:Atropis (Subgenus) Pease, 1871, nom. illeg. - mollusc
ICZN:Atychia (Genus) Ochsenheimer, 1808 see (Genus) Procris Fabricius, 1807 - moth ICZN:Atychia (Genus) Latreille, 1809, nom. illeg. - moth
ICZN:Atylodes (Genus) Gistel, 1868 - amphibian ICZN:Atylodes (Genus) Broun, 1914, nom. illeg. - beetle
ICZN:Aubertia (Genus) Oberthür, 1896 - butterfly ICZN:Aubertia (Genus) Théry, 1922, nom. illeg. - beetle
ICZN:Aubertia (Genus) Oberthür, 1896 - butterfly ICZN:Aubertia (Genus) Viktorov, 1968, nom. illeg. see (Genus) Aubertiana Viktorov, 1970 - insect
ICZN:Aubertia (Genus) Théry, 1922, nom. illeg. - beetle ICZN:Aubertia (Genus) Viktorov, 1968, nom. illeg. see (Genus) Aubertiana Viktorov, 1970 - insect
ICBN:Aubletia (Genus) J. Gaertner (1788) - plant ICBN:Aubletia (Genus) Schreber (1789) - plant
ICBN:Aubletia (Genus) J. Gaertner (1788) - plant ICBN:Aubletia (Genus) Loureiro (1790) - plant
ICBN:Aubletia (Genus) Schreber (1789) - plant ICBN:Aubletia (Genus) Loureiro (1790) - plant
ICBN:Aubletia (Genus) Schreber (1789) - plant ICBN:Aubletia (Genus) Persoon (1807) - plant
ICBN:Aubletia (Genus) J. Gaertner (1788) - plant ICBN:Aubletia (Genus) Persoon (1807) - plant
ICBN:Aubletia (Genus) Loureiro (1790) - plant ICBN:Aubletia (Genus) Persoon (1807) - plant
ICZN:Aulacodes (Genus) Guenée, 1854 - moth ICZN:Aulacodes (Genus) Cresson, 1865, nom. illeg. - wasp
ICZN:Auloplegma (Genus) Haeckel, 1869 see (Genus) Guancha Miklucho-Maclay, 1868 - sponge ICZN:Auloplegma (Genus) Schmidt, 1879, nom. illeg. see (Genus) Scleroplegma Schmidt, 1880 - sponge
ICZN:Auloplegma (Genus)