Acanthasteridae Sladen, 1889 (extant flag source)
Actinosphaeridae Schulze, 1877 accepted as Actinosphaeriidae (extant flag source)
Aeshnidae Leach, 1815 (extant flag source)
Alcedinidae Rafinesque, 1815 (extant flag source)
Ammotrechidae Roewer, 1934 (extant flag source)
Belidae Schönherr, 1826 (extant flag source)
Blechnaceae Newman, 1844 (extant flag source)
Boganiidae Sen Gupta & Crowson, 1966 (extant flag source)
Boridae Thomson, 1859 (extant flag source)
Bostrichidae Latreille, 1802 (extant flag source)
Branchiostegidae Jordan, 1923 accepted as Malacanthidae Poey, 1861 (extant flag source)
Brentidae Billberg, 1820 (extant flag source)
Caponiidae Simon, 1890 (extant flag source)
Centrocubidae Hollande & Enjumet, 1960 (extant flag source)
Choriplacidae Ashby, 1928 (extant flag source)
Chromodorididae Bergh, 1891 (extant flag source)
Ciidae Leach, 1819 (extant flag source)
Cricetidae Fischer von Waldheim, 1817 (extant flag source)
Ctenomyidae Lesson, 1842 (extant flag source)
Derodontidae LeConte, 1861 (extant flag source)
Elysiidae Forbes & Hanley, 1851 accepted as Plakobranchidae Rang, 1829 (extant flag source)
Euryalidae Gray, 1840 (extant flag source)
Fringillidae Vigors, 1825 (extant flag source)
Galagidae Gray, 1825 (extant flag source)
Glauconomidae Gray, 1853 (extant flag source)
Heteromyidae Gray, 1868 (extant flag source)
Hylobatidae Gray, 1870 (extant flag source)
Hyriidae Swainson, 1840 (extant flag source)
Lametilidae Allen & Sanders, 1973 (extant flag source)
Languriidae Hope, 1840 accepted as Erotylidae Latreille, 1802 (extant flag source)
Limnadiidae Baird, 1894 (extant flag source)
Lymexylidae Fleming, 1821 (extant flag source)
Muscicapidae Fleming, 1822 (extant flag source)
Mycteridae Oken, 1843 (extant flag source)
Omethidae LeConte, 1861 (extant flag source)
Omniglyptidae Chistikov, 1975 (extant flag source)
Ophiactidae Matsumoto, 1915 (extant flag source)
Ophiomyxidae Ljungman, 1867 (extant flag source)
Ophionereididae Ljungman, 1867 (extant flag source)
Oreasteridae Fisher, 1911 (extant flag source)
Petrosiidae Van Soest, 1980 (extant flag source)
Phloeostichidae Reitter, 1911 (extant flag source)
Platyhedylidae Salvini-Plawen, 1973 (extant flag source)
Pleurobranchidae Férussac, 1822 (extant flag source)
Pristiglomidae Sanders & Allen, 1973 accepted as Sareptidae Adams, 1860 (extant flag source)
Pterasteridae Perrier, 1875 (extant flag source)
Radiasteridae Fisher, 1916 (extant flag source)
Rhizomyidae Miller & Gidley, 1918 accepted as Spalacidae Gray, 1821 (extant flag source)
Rhizosphaeridae Haeckel, 1881 (extant flag source)
Rhodopidae Kolliker, 1847 (extant flag source)
Skeneopsidae Iredale, 1915 (extant flag source)
Spalacidae Gray, 1821 (extant flag source)
Spionidae Sars, 1861 (extant flag source)
Stictodiscaceae (extant flag source)
Tethyidae Gray, 1867 (extant flag source)
Thalassothamnidae Haecker, 1906 (extant flag source)
Thylacomyidae Bensley, 1903 (extant flag source)
Thyropteridae Miller, 1907 (extant flag source)
Triuridaceae Gardner, 1843 (extant flag source)
Valvasteridae Viguier, 1878 accepted as Asteropseidae Hotchkiss & Clark, 1976 (extant flag source)
Zapodidae Coues, 1875 accepted as Dipodidae Waterhouse, 1842 (extant flag source)
Zopheridae Solier, 1834 (extant flag source)