Aa H.G. Reichenbach, 1854 (basis of record)
Aaronsohnia O. Warburg & A. Eig, 1927 (basis of record)
Aatolana Bruce, 1993 (basis of record)
Aatolana Bruce, 1993 (extant flag source)
Abacina Norman, 1853 accepted as Diplotomma Flotow, 1849 (basis of record)
Abacoceraphron Dessart, 1975 (basis of record)
Abacoceraphron Dessart, 1975 (extant flag source)
Abacosa Alefeld, 1861 (basis of record)
Abacosa Alefeld, 1861 (extant flag source)
Abagrotis Smith, 1890 (basis of record)
Abagrotis Smith, 1890 (extant flag source)
Abama Adanson, 1763 accepted as Narthecium Hudson, 1762 (basis of record)
Abantennarius Schultz, 1957 accepted as Antennarius Daudin, 1816 (basis of record)
Abantennarius Schultz, 1957 accepted as Antennarius Daudin, 1816 (name verified source)
Abantennarius Schultz, 1957 accepted as Antennarius Daudin, 1816 (extant flag source)
Abaristophora Schmitz, 1927 (basis of record)
Abaristophora Schmitz, 1927 (extant flag source)
Abathescalpellum Newman & Ross, 1971 (basis of record)
Abathescalpellum Newman & Ross, 1971 (extant flag source)
Abauria Beccari, 1877 accepted as Koompassia Maingay ex Bentham, 1873 (basis of record)
Abbottia L.P. Perestenko, 1977 accepted as Neoabbottiella Perestenko, 1982 (basis of record)
Abbottia L.P. Perestenko, 1977 accepted as Neoabbottiella Perestenko, 1982 (extant flag source)
Abcichthys Whitley, 1927 accepted as Liocranium Ogilby, 1903 (basis of record)
Abcichthys Whitley, 1927 accepted as Liocranium Ogilby, 1903 (extant flag source)
Abdia Barnard & Karaman, 1987 (basis of record)
Abdia Barnard & Karaman, 1987 (extant flag source)
Abdominea J.J. Smith, 1914 (basis of record)
Abebaioscia Vandel, 1973 (basis of record)
Abebaioscia Vandel, 1973 (extant flag source)
Abeona Girard, 1855 accepted as Micrometrus Gibbons, 1854 (basis of record)
Abeona Girard, 1855 accepted as Micrometrus Gibbons, 1854 (extant flag source)
Abergasilus Hewitt, 1978 (basis of record)
Abietinella Müller Hal., 1896 (basis of record)
Abietinella Müller Hal., 1896 (extant flag source)
Abildgaardia M. Vahl, 1805 (basis of record)
Abiskomyia Edwards, 1937 (basis of record)
Abiskomyia Edwards, 1937 (extant flag source)
Ablacopus Thomson, 1880 accepted as Aphanesthes Kraatz, 1880 (basis of record)
Ablacopus Thomson, 1880 accepted as Aphanesthes Kraatz, 1880 (extant flag source)
Ablautus Loew, 1866 (basis of record)
Ablautus Loew, 1866 (extant flag source)
Abobra Naudin, 1862 (basis of record)
Aboma Jordan & Starks in Jordan, 1895 (basis of record)
Aboma Jordan & Starks in Jordan, 1895 (extant flag source)
Aboriella S.S.R. Bennet in M.B. Raizada & S.S.R. Bennet, 1981 accepted as Achudemia Blume, 1856 (basis of record)
Aborolobatea Ledoyer, 1984 (basis of record)
Aborolobatea Ledoyer, 1984 (extant flag source)
Abortipedia Unnithan, 1962 (basis of record)
Abortipedia Unnithan, 1962 (extant flag source)
Abramocephalus Steindachner, 1869 accepted as Hypophthalmichthys Bleeker, 1860 (basis of record)
Abranches Smith, 1947 accepted as Gobiopsis Steindachner, 1861 (basis of record)
Abranches Smith, 1947 accepted as Gobiopsis Steindachner, 1861 (extant flag source)
Abrognathus Jakovlev, 1890 (basis of record)
Abrognathus Jakovlev, 1890 (extant flag source)
Abromeitia Mez, 1922 accepted as Fittingia Mez, 1922 (basis of record)
Abrostomus Smith, 1841 accepted as Labeo Cuvier, 1816 (basis of record)
Abrotanella Cassini in F. Cuvier, 1825 (basis of record)
Abroteia J.G. Agardh, 1876 (basis of record)
Abroteia J.G. Agardh, 1876 (extant flag source)
Absalom Whitley, 1937 accepted as Pantolabus Whitley, 1931 (basis of record)
Absalom Whitley, 1937 accepted as Pantolabus Whitley, 1931 (extant flag source)
Äbudefduf Forskål, 1775 accepted as Abudefduf Forsskål, 1775 (basis of record)
Äbudefduf Forskål, 1775 accepted as Abudefduf Forsskål, 1775 (extant flag source)
Abunema Khera, 1971 (basis of record)
Abunema Khera, 1971 (extant flag source)
Abutilothamnus Ulbrich, 1915 accepted as Bastardiopsis (K.M. Schumann) Hassler, 1910 (basis of record)
Abyssaranea Wilson & Hessler, 1974 (basis of record)
Abyssaranea Wilson & Hessler, 1974 (extant flag source)
Abyssarcturella Poore & Bardsley, 1992 (basis of record)
Abyssarcturella Poore & Bardsley, 1992 (extant flag source)
Abyssianira Menzies, 1956 (basis of record)
Abyssianira Menzies, 1956 (extant flag source)
Abyssicola Goode & Bean, 1896 accepted as Coelorinchus Giorna, 1809 (basis of record)
Abyssicola Goode & Bean, 1896 accepted as Coelorinchus Giorna, 1809 (extant flag source)
Abyssocucumis Heding, 1942 (basis of record)
Abyssocucumis Heding, 1942 (extant flag source)
Abyssoniscus Birstein, 1971 (basis of record)
Abyssoniscus Birstein, 1971 (extant flag source)
Abythites Nielsen & Cohen, 1973 accepted as Cataetyx Günther, 1887 (basis of record)
Abythites Nielsen & Cohen, 1973 accepted as Cataetyx Günther, 1887 (extant flag source)
Acaciacoris Schaffner, 1977 (basis of record)
Acaciacoris Schaffner, 1977 (extant flag source)
Acaciella N.L. Britton & J.N. Rose, 1928 (basis of record)
Acaciopsis N.L. Britton & J.N. Rose, 1928 accepted as Acacia P. Miller, 1754 (basis of record)
Acaeroplastes Verhoeff, 1918 (basis of record)
Acaeroplastes Verhoeff, 1918 (extant flag source)
Acalle Gray, 1867 (basis of record)
Acalle Gray, 1867 (extant flag source)
Acalypta Westwood, 1840 (basis of record)
Acalypta Westwood, 1840 (extant flag source)
Acampe Lindley, 1853 (basis of record)
Acamptoclados Nash in J.K. Small, 1903 accepted as Eragrostis N.M. Wolf, 1776 (basis of record)
Acamptogorgia Wright & Studer, 1889 accepted as Villogorgia Duchassaing & Michelloti, 1862 (basis of record)
Acamptogorgia Wright & Studer, 1889 accepted as Villogorgia Duchassaing & Michelloti, 1862 (extant flag source)
Acamptopappus (A. Gray) A. Gray, 1873 (basis of record)
Acanthacaris Spence Bate, 1888 (basis of record)
Acanthallagma Williamson, 1924 (basis of record)
Acanthallagma Williamson, 1924 (extant flag source)
Acanthamunnopsis Schultz, 1978 (basis of record)
Acanthamunnopsis Schultz, 1978 (extant flag source)