Aechminellidae Sohn in Benson, Berdan, Bold, Hanai, Hessland, Howe, Kesling, Levinson, Reyment, Moore, Scott, Shaver, Sohn, Stover, Swain & Sylvester-Bradley, 1961 † (original description)
Arcyzonidae Kesling, 1961 † (original description)
Aurigerites Roundy, 1926 † (taxonomy source)
Bairdiocyprididae Shaver in Benson, Berdan, Bold, Hanai, Hessland, Howe, Kesling, Levinson, Reyment, Moore, Scott, Shaver, Sohn, Stover, Swain & Sylvester-Bradley, 1961 † (original description)
Barychilinidae Ulrich, 1894 † (taxonomy source)
Beyrichicopina † (original description)
Bolliidae Boucek, 1936 † (basis of record)
Bufinidae Sohn & Stover in Benson, Berdan, Bold, Hanai, Hessland, Howe, Kesling, Levinson, Reyment, Moore, Scott, Shaver, Sohn, Stover, Swain & Sylvester-Bradley, 1961 † (original description)
Cladocopina (taxonomy source)
Cypridinacea Baird, 1850 accepted as Cypridinoidea Baird, 1850 (taxonomy source)
Cytherideidae Sars, 1925 (taxonomy source)
Cytherideinae Sars, 1925 (taxonomy source)
Cytheruridae Müller, 1894 (taxonomy source)
Eucandonidae Swain, 1961 accepted as Candonidae Kaufmann, 1900 (original description)
Flexus Neviani, 1928 † (taxonomy source)
Flexus plicatus (Muenster, 1830) (new combination reference)
Flexus plicatus plicatus (Muenster, 1830) Howe in Benson, 1961 (new combination reference)
Healdiacea Harlton, 1933 † accepted as  † (basis of record)
Henryhowella (Henryhowella) evax (Ulrich & Bassler, 1904) † represented as Henryhowella evax (Ulrich & Bassler, 1904) † (new combination reference)
Henryhowella evax (Ulrich & Bassler, 1904) † (new combination reference)
Henryhowella evax evax (Ulrich & Bassler, 1904) † (new combination reference)
Henryhowella evax oblongula (Ulrich & Bassler, 1904) † (new combination reference)
Hollinacea Swartz, 1936 † accepted as Hollinoidea Swartz, 1936 † accepted as Eurychilinoidea Ulrich & Bassler, 1923 † (basis of record)
Jonesia acuminata (Sars, 1866) (new combination reference)
Kirkbyacea Ulrich & Bassler, 1906 † represented as Kirkbyoidea Ulrich & Bassler, 1906 † (basis of record)
Kloedenellacea Ulrich & Bassler, 1908 † represented as  † (basis of record)
Kloedenellocopina † represented as  † (taxonomy source)
Krausellidae Berdan in Benson, Berdan, Bold, Hanai, Hessland, Howe, Kesling, Levinson, Reyment, Moore, Scott, Shaver, Sohn, Stover, Swain & Sylvester-Bradley, 1961 † (original description)
Leperditellacea Ulrich & Bassler, 1906 † accepted as Leperditelloidea Ulrich & Bassler, 1906 † (basis of record)
Leperditicopida † (additional source)
Leperditicopida † (original description)
Metacopina † (original description)
Myodocopina (taxonomy source)
Neocyprideis Apostolescu, 1956 (taxonomy source)
Neocyprideis (Neocyprideis) Apostolescu, 1957 (taxonomy source)
Neocyprideis durocortoriensis (Apostolescu, 1956) † (new combination reference)
Ovocytheridea Grekoff, 1951 † (taxonomy source)
Pachydomellidae Berdan & Sohn in Benson, Berdan, Bold, Hanai, Hessland, Howe, Kesling, Levinson, Reyment, Moore, Scott, Shaver, Sohn, Stover, Swain & Sylvester-Bradley, 1961 † (original description)
Parakrithella Hanai, 1961 (replacement name source)
Parakrithella pseudadonta (Hanai, 1959) (new combination reference)
Platycopina (basis of record)
Podocopina accepted as Podocopida (taxonomy source)
Primitiopsacea Swartz, 1936 † accepted as Primitiopsoidea Swartz, 1936 † (taxonomy source)
Punciacea Hornibrook, 1949 accepted as Puncioidea Hornibrook, 1949 (original description)
Quasillitacea Coryell & Malkin, 1936 † accepted as Quasillitoidea Coryell & Malkin, 1936 † (basis of record)
Richinidae Scott in Benson, Berdan, Bold, Hanai, Hessland, Howe, Kesling, Levinson, Reyment, Moore, Scott, Shaver, Sohn, Stover, Swain & Sylvester-Bradley, 1961 † (original description)
Thlipsuracea Ulrich, 1894 † accepted as Thlipsuroidea Ulrich, 1894 † (basis of record)