Anazygidae Davidson, 1883 † (basis of record)
Archaeoctonidae Petrunkevitch, 1949 † accepted as Proscorpiidae Scudder, 1885 † (basis of record)
Armadillididae accepted as Armadillidiidae Brandt, 1833 (basis of record)
Aseptirhynchiidae † accepted as Aseptorhynchiidae † (basis of record)
Astrangiidae (basis of record)
Aulocopiidae (basis of record)
Barycrinidae Jaekel, 1918 † (basis of record)
Berounellidae Sohn & Berdan, 1960 † (basis of record)
Cadocrinidae † (basis of record)
Carabocrinidae (basis of record)
Clavatulidae Gray, 1853 (basis of record)
Coelocrinidae (basis of record)
Cyclanthariidae † (basis of record)
Cymbiocrinidae (basis of record)
Dendrophyllidae accepted as Dendrophylliidae Gray, 1847 (basis of record)
Druppulidae Haeckel, 1887 (basis of record)
Ellipsidiidae Haeckel, 1867 (basis of record)
Endymioniidae † (basis of record)
Eospongiidae (basis of record)
Erisocrinidae (basis of record)
Euchitoniidae Haeckel, 1887 (basis of record)
Eupachycrinidae (basis of record)
Flindersicyathidae † (basis of record)
Gasterocomidae (basis of record)
Hammatoceratidae † (basis of record)
Heterocrinidae (basis of record)
Hibbardellidae Müller, 1956 † (basis of record)
Hungaritidae Waagen, 1895 † (basis of record)
Hydreionocrinidae (basis of record)
Klasmuridae Spencer, 1925 (basis of record)
Krausellidae Berdan in Benson et al., 1961 † (basis of record)
Lampterocrinidae † (basis of record)
Lepidesthidae Jackson, 1896 † (basis of record)
Liomesaspididae † accepted as Liomesaspidae Raymond, 1944 † accepted as Belinuridae Zittel in Zittel & Eastman, 1913 † (basis of record)
Mastigocrinidae (basis of record)
Mastosiidae (basis of record)
Mesopalaeasteridae Schuchert, 1915 (basis of record)
Mespilocrinidae (basis of record)
Microdontidae (basis of record)
Mollocrinidae (basis of record)
Obturamentellidae Savage, 1996 † (basis of record)
Oecoptychiidae † (basis of record)
Opabinidae † accepted as Opabiniidae Walcott, 1912 † (basis of record)
Paradelocrinidae (basis of record)
Phlycticrioceratidae Spath, 1926 † (basis of record)
Prophyllocrinidae (basis of record)
Proscorpiidae Scudder, 1885 † (basis of record)
Reteocrinidae † (basis of record)
Rhenocrinidae (basis of record)
Rhopalocystidae Ubaghs, 1963 † (basis of record)
Sethopiliidae Haeckel, 1882 (basis of record)
Staphylocrinidae (basis of record)
Stoermeroscorpionidae Kjellesvig-Waering, 1986 † accepted as Proscorpiidae Scudder, 1885 † (basis of record)
Sulcoreteporidae † accepted as Cystodictyonidae Ulrich, 1884 † (basis of record)
Trachyteuthidae † accepted as Trachyteuthididae Naef, 1921 † (basis of record)
Trigonitretidae † accepted as Trigonotretidae Schuchert, 1893 † (basis of record)
Trigonomartidae Petrunkevitch, 1949 † (basis of record)
Vorhisiidae † (basis of record)
Westgardellidae Durham, 1993 † (basis of record)