Acanthina Fischer von Waldheim, 1807 (basis of record)
Acanthobdella Grube, 1851 (basis of record)
Acanthobdella Grube, 1851 (extant flag source)
Acanthopriapulus van der Land, 1970 (extant flag source)
Acanthopriapulus van der Land, 1970 (basis of record)
Acanthoscurria Ausserer, 1871 (basis of record)
Achaetobonellia Fisher, 1953 (extant flag source)
Achaetobonellia Fisher, 1953 (basis of record)
Achelia Hodge, 1864 (basis of record)
Agastoschizomus Rowland, 1971 (basis of record)
Agelena Walckenaer, 1805 (basis of record)
Allolobophora Eisen, 1873 (extant flag source)
Allolobophora Eisen, 1873 (basis of record)
Ammothella Verrill, 1900 (basis of record)
Amphictene Savigny, 1822 (basis of record)
Ampithoe Leach, 1814 (basis of record)
Ampithoe Leach, 1814 (extant flag source)
Analges Nitzsch in Ersch & Gruber, 1818 (basis of record)
Anaspides Thomson, 1894 (basis of record)
Anaspides Thomson, 1894 (extant flag source)
Anisogammarus Derzhavin, 1927 (basis of record)
Anisogammarus Derzhavin, 1927 (extant flag source)
Annulipulsellum Scarabino, 1986 (extant flag source)
Annulipulsellum Scarabino, 1986 (basis of record)
Anoplodactylus Wilson, 1878 (basis of record)
Anthura Leach, 1814 (basis of record)
Anthura Leach, 1814 (extant flag source)
Antillesoma Stephen & Edmonds, 1972 (extant flag source)
Antillesoma Stephen & Edmonds, 1972 (basis of record)
Aphonopelma Pocock, 1901 (basis of record)
Apionsoma Sluiter, 1902 (extant flag source)
Apionsoma Sluiter, 1902 (basis of record)
Araneus Clerck, 1757 (basis of record)
Arbarenicola accepted as Abarenicola Wells, 1959 (basis of record)
Arbarenicola accepted as Abarenicola Wells, 1959 (extant flag source)
Arctonoe Chamberlin, 1920 (basis of record)
Arctonoe Chamberlin, 1920 (extant flag source)
Arcturus Latreille, 1829 (basis of record)
Arcturus Latreille, 1829 (extant flag source)
Argiope Audouin in Savigny, 1827 (basis of record)
Argyrodes Simon, 1864 (basis of record)
Argyroneta Latreille, 1804 (basis of record)
Asaphus Brongniart in Brongniart & Desmarest, 1822 † (basis of record)
Aspidophorus accepted as Aspidiophorus Voigt, 1903 (extant flag source)
Aspidophorus accepted as Aspidiophorus Voigt, 1903 (basis of record)
Aspidosiphon Diesing, 1851 (extant flag source)
Aspidosiphon Diesing, 1851 (basis of record)
Astrocaneum Döderlein, 1911 (basis of record)
Astrocaneum Döderlein, 1911 (extant flag source)
Atypus Latreille, 1804 (basis of record)
Axius Leach, 1815 (basis of record)
Balathealinum accepted as Galathealinum Kirkegaard, 1956 (basis of record)
Bathybelos Owre, 1973 (extant flag source)
Bathybelos Owre, 1973 (basis of record)
Bathyspadella Tokioka, 1939 (extant flag source)
Bathyspadella Tokioka, 1939 (basis of record)
Bonellia Rolando, 1821 (extant flag source)
Bonellia Rolando, 1821 (basis of record)
Bopyrus Latreille, 1802 (basis of record)
Bopyrus Latreille, 1802 (extant flag source)
Botryocrinus Angelin, 1878 † (basis of record)
Bougainvilla Hargitt, 1902 accepted as Bougainvillia Lesson, 1830 (extant flag source)
Bougainvilla Hargitt, 1902 accepted as Bougainvillia Lesson, 1830 (basis of record)
Bruunella (basis of record)
Bruunella (extant flag source)
Buccinum Linnaeus, 1758 (basis of record)
Calabozoa Van Lieshout, 1983 (extant flag source)
Calabozoa Van Lieshout, 1983 (basis of record)
Callipallene Flynn, 1929 (basis of record)
Calosoma Weber, 1801 (basis of record)
Campanularia Lamarck, 1816 (basis of record)
Campanularia Lamarck, 1816 (extant flag source)
Camptostroma Ruedemann, 1933 † (basis of record)
Cancellaria Lamarck, 1799 (basis of record)
Cantharus Röding, 1798 (basis of record)
Carcinoscorpius Pocock, 1902 (basis of record)
Cassiopeia Gistl, 1848 accepted as Cassiopea Péron & Lesueur, 1810 (extant flag source)
Cassiopeia Gistl, 1848 accepted as Cassiopea Péron & Lesueur, 1810 (basis of record)
Ceratostoma Herrmannsen, 1846 (basis of record)
Ceratothoa Dana, 1852 (basis of record)
Ceratothoa Dana, 1852 (extant flag source)
Chactus Brusca & Brusca, 1990 accepted as Chactas Gervais, 1844 (basis of record)
Chelonibia Leach, 1817 (basis of record)
Chiltoniella Knox & Fenwick, 1977 (basis of record)
Chiltoniella Knox & Fenwick, 1977 (extant flag source)
Cirolana Leach, 1818 (basis of record)
Clitellio Savigny, 1820 (basis of record)
Clitellio Savigny, 1820 (extant flag source)
Cloeosiphon Grube, 1868 (basis of record)
Cloeosiphon Grube, 1868 (extant flag source)
Clubiona Latreille, 1804 (basis of record)
Coelotes Blackwall, 1841 (basis of record)
Colossendeis Jarzynsky, 1870 (basis of record)
Conocoryphe Hawle & Corda, 1847 † (basis of record)
Corbicula Megerle von Mühlfeld, 1811 (basis of record)
Coronula Bruguière, 1792 (basis of record)
Cotylaspis Leidy, 1857 (extant flag source)
Cotylaspis Leidy, 1857 (basis of record)
Crassispira Swainson, 1840 (basis of record)
Crucibulum Schumacher, 1817 (basis of record)