Aculagnathidae Oke, 1932 accepted as Cerylonidae Billberg, 1820 (habitat flag source)
Agapythidae Sen Gupta & Crowson, 1969 (habitat flag source)
Agoniatitidae Holzapfel, 1899 † (habitat flag source)
Akalyptoischiidae Lord, Hartley, Lawrence, McHugh & Miller, 2010 (habitat flag source)
Alexiidae Imhoff, 1856 (habitat flag source)
Ammonoidea (awaiting allocation) † (habitat flag source)
Ancyloceratida (awaiting allocation) † (habitat flag source)
Ascocerida (awaiting allocation) † (habitat flag source)
Aulacocerida (awaiting allocation) † (habitat flag source)
Barrandeocerida (awaiting allocation) † (habitat flag source)
Belohinidae Paulian, 1959 (habitat flag source)
Berendtimiridae Winkler, 1987 † (habitat flag source)
Blattisociidae Garman, 1948 (habitat flag source)
Bothrideridae Erichson, 1845 (habitat flag source)
Bryopsocidae (habitat flag source)
Castriidinychidae Hirschmann, 1979 (habitat flag source)
Ceratitida (awaiting allocation) † (habitat flag source)
Chamostreidae Stoliczka, 1870 accepted as Cleidothaeridae Hedley, 1918 (habitat flag source)
Charipidae (habitat flag source)
Cholevidae Kirby, 1837 accepted as Leiodidae Fleming, 1821 (habitat flag source)
Chorisoneuridae (habitat flag source)
Circaeidae Iablkov-Khnzorian, 1961 † accepted as Aderidae Csiki, 1909 (habitat flag source)
Clymeniida (awaiting allocation) † (habitat flag source)
Coeliaxidae Pilsbry, 1907 accepted as Subulinidae P. Fischer & Crosse, 1877 (habitat flag source)
Colymbothetidae Ponomarenko, 1994 † (habitat flag source)
Crowsoniellidae Iablokoff-Khnzorian, 1983 (habitat flag source)
Cryptolaryngidae Schalkwyk, 1966 accepted as Brachyceridae Billberg, 1820 (habitat flag source)
Cyclaxyridae Gimmel, Leschen & Ślipiński, 2009 (habitat flag source)
Electrapatidae Iablokoff-Khnzorian, 1962 † accepted as Schizopodidae LeConte, 1859 (habitat flag source)
Elodophthalmidae Kirejtshuk & Azar, 2008 † (habitat flag source)
Endecatomidae LeConte, 1861 (habitat flag source)
Eobelidae Arnoldi, 1977 † accepted as Nemonychidae Bedel, 1882 (habitat flag source)
Eurhynchidae Lacordaire, 1863 accepted as Brentidae Billberg, 1820 (habitat flag source)
Hematitidae † (habitat flag source)
Hobartiidae Sen Gupta & Crowson, 1966 (habitat flag source)
Hutufeideriidae Hirschmann, 1979 (habitat flag source)
Intejocerida (awaiting allocation) † (habitat flag source)
Ischaliidae Blair, 1920 accepted as Scraptiidae Mulsant, 1856 (habitat flag source)
Laemophloeidae Ganglbauer, 1899 (habitat flag source)
Lamellaptychidae Mechova, Vašícek & Houša, 2010 † (habitat flag source)
Lasiosynidae Kirejtshuk, Chang, Ren & Kun, 2010 (habitat flag source)
Lytoceratida (awaiting allocation) † (habitat flag source)
Maamingidae (habitat flag source)
Magnocoleidae Hong, 1998 † (habitat flag source)
Mauroniscidae Majer, 1995 (habitat flag source)
Menaspidae † (habitat flag source)
Mesocinetidae Kirejtshuk & Ponomarenko, 2010 † (habitat flag source)
Metaxinidae Kolibác, 2004 accepted as Chaetosomatidae Crowson, 1952 (habitat flag source)
Monommatidae Blanchard, 1845 accepted as Zopheridae Solier, 1834 (habitat flag source)
Myraboliidae Lawrence & Britton, 1991 (habitat flag source)
Obrieniidae Zherikhin & Gratshev, 1994 † (habitat flag source)
Oxypeltidae Lacordaire, 1868 (habitat flag source)
Parandrexidae Kirejtshuk, 1994 † (habitat flag source)
Pelobiidae Erichson, 1837 accepted as Hygrobiidae Regimbart, 1878 (habitat flag source)
Pholadomyoida (awaiting allocation) (habitat flag source)
Phylloceratida (awaiting allocation) † (habitat flag source)
Plusculidae Franc, 1968 accepted as Philinoglossidae Hertling, 1932 (habitat flag source)
Podabrocephalidae Pic, 1930 (habitat flag source)
Priasilphidae Crowson, 1973 (habitat flag source)
Promecheilidae Lacordaire, 1859 (habitat flag source)
Punctaptychidae Mechova, Vašícek & Houša, 2010 † (habitat flag source)
Rallidentidae (habitat flag source)
Schizocoleidae Rohdendorf, 1961 † (habitat flag source)
Schlotheimiidae Spath, 1923 † (habitat flag source)
Sinisilvanidae Hong, 2002 † (habitat flag source)
Spongiphoridae Verhoeff, 1902 (habitat flag source)
Tasmosalpingidae Lawrence & Britton, 1991 (habitat flag source)
Thanerocleridae Chapin, 1924 (habitat flag source)
Trachelostenidae Lacordaire, 1859 (habitat flag source)
Triadocupedidae Ponomarenko, 1966 † (habitat flag source)
Tritarsidae Hong, 2002 † (habitat flag source)
Tritarsusidae Hong, 2002 † accepted as Tritarsidae Hong, 2002 † (habitat flag source)
Ulodidae Pascoe, 1869 (habitat flag source)
Ulyanidae Zherikhin, 1993 † (habitat flag source)
Vesperidae Mulsant, 1839 (habitat flag source)
Waipatiidae Fordyce, 1994 † (habitat flag source)