Abiellinae Starobogatov, 1970 † (basis of record)
Acanthopectininae Newell & Boyd, 1995 † (basis of record)
Actinodontida † (basis of record)
Actinodontidae A. M. Davies, 1933 † (basis of record)
Adamussiini T. Habe, 1977 (basis of record)
Aenigmoconchidae Betekhtina, 1968 † (basis of record)
Afghanodesmatida † (original description)
Afghanodesmatidae Scarlato & Starobogatov, 1979 † (basis of record)
Afghanodesmatoidea Scarlato & Starobogatov, 1979 † (basis of record)
Alatoconchidae H. Termier, G. Termier & de Lapparent, 1974 † (basis of record)
Alatoconchoidea H. Termier, G. Termier & de Lapparent, 1974 † (basis of record)
Ambonychiidae S. A. Miller, 1877 † (basis of record)
Ambonychioidea S. A. Miller, 1877 † (basis of record)
Amnigeniidae Khalfin, 1948 † (basis of record)
Amnigenioidea Khalfin, 1948 † (basis of record)
Amphijanira Bittner, 1901 † (basis of record)
Amusiini Ridewood, 1903 (basis of record)
Anadontellidae Silantiev, 2011 † (original description)
Annuliconchidae Astafieva, 1995 † (basis of record)
Anodontopsidae S. A. Miller, 1889 † (basis of record)
Anodontopsoidea S. A. Miller, 1889 † (basis of record)
Anthracosiidae Amalitzky, 1892 † (basis of record)
Anthracosioidea Amalitzky, 1892 † (basis of record)
Antijanira Bittner, 1901 † (basis of record)
Antijaniridae Hautmann, 2011 † (original description)
Antillocaprinidae MacGillavry, 1937 † (basis of record)
Archaeocardiidae Khalfin, 1940 † (basis of record)
Arenigomyidae J. G. Carter, 2011 † (original description)
Asoellinae Begg & H. J. Campbell, 1986 † (basis of record)
Atomodesmatidae Waterhouse, 1976 † (basis of record)
Aulacomyellidae Ichikawa, 1958 † (basis of record)
Aulacomyellinae Ichikawa, 1958 † (basis of record)
Austrochlamydini Jonkers, 2003 (additional source)
Aviculopectinidae Meek & Hayden, 1865 † (basis of record)
Aviculopectinoidea Meek & Hayden, 1865 † (basis of record)
Babinkidae Horný, 1960 † (basis of record)
Babinkoidea Horný, 1960 † (basis of record)
Baidiostracidae Z.-J. Fang & Cope, 2008 † (basis of record)
Bakevelliidae W. King, 1850 † (basis of record)
Beichuaniidae X.-Z. Liu & D.-Y. Gu, 1988 † (basis of record)
Bositrinae Waterhouse, 2008 † (basis of record)
Buchiidae L. R. Cox, 1953 † (basis of record)
Buchioidea L. R. Cox, 1953 † (basis of record)
Buchiolidae Grimm, 1998 † (basis of record)
Buchotrigoniidae H. A. Leanza, 1993 † (additional source)
Burmesiidae Healey, 1908 † (basis of record)
Camyidae Hinz-Schallreuter, 2000 † (basis of record)
Caprinidae A. d'Orbigny, 1847 † (basis of record)
Caprinulidae Yanin, 1990 † (basis of record)
Caprotinidae J. E. Gray, 1848 † (basis of record)
Cardiniidae Zittel, 1881 † (additional source)
Cardiolidae R. Hoernes, 1884 † (basis of record)
Cardioloidea R. Hoernes, 1884 † (basis of record)
Cassianellidae Ichikawa, 1958 † (basis of record)
Cassianoidinae Newell & Boyd, 1995 † (additional source)
Catamarcaiidae Cope, 2000 † (basis of record)
Ceratomyidae Arkell, 1934 † (basis of record)
Ceratomyopsidae L. R. Cox, 1964 † (basis of record)
Chaenocardiidae S. A. Miller, 1889 † (basis of record)
Chaenocardioidea S. A. Miller, 1889 † (basis of record)
Claraiidae Gavrilova, 1996 † (basis of record)
Clinopisthidae Pojeta, 1988 † (basis of record)
Colpomyida † (original description)
Colpomyidae Pojeta & Gilbert-Tomlinson, 1977 † (basis of record)
Colpomyoidea Pojeta & Gilbert-Tomlinson, 1977 † (basis of record)
Concinellinae Silantiev, 2011 † (original description)
Congeriomorphidae Saul, 1976 † (basis of record)
Coxiconchiidae Babin, 1977 † (basis of record)
Crassatellopsidae J. G. Carter, 2011 † (original description)
Ctenodontidae Wöhrmann, 1893 † (basis of record)
Cucullellidae P. Fischer, 1886 † (basis of record)
Cycloconchidae Ulrich, 1894 † (basis of record)
Cypricardiniidae Ulrich, 1894 † (basis of record)
Cyrtodontida † (basis of record)
Cyrtodontidae Ulrich, 1894 † (basis of record)
Cyrtodontoidea Ulrich, 1894 † (basis of record)
Cyrtorostrinae Newell & Boyd, 1995 † (basis of record)
Daonellidae Neumayr, 1891 † (basis of record)
Darininae Signorelli, 2011 (original description)
Deltopectinidae Dickins, 1957 † (basis of record)
Desertellidae Dechaseaux, 1947 † (basis of record)
Diceratidae Dall, 1895 † (basis of record)
Dicerocardiidae Kutassy, 1934 † (basis of record)
Dolponellidae Waterhouse, 2001 † (basis of record)
Dualinidae Conrath, 1887 † (basis of record)
Dualinoidea Conrath, 1887 † (basis of record)
Eburneopectinini T. R. Waller, 2006 † (basis of record)
Edmondiidae W. King, 1850 † (basis of record)
Edmondioidea W. King, 1850 † (basis of record)
Eligmidae Gill, 1871 † (basis of record)
Entolioidea Teppner, 1922 † (basis of record)
Entolioidesidae Kasum-Zade, 2003 † (basis of record)
Eoastartinae Newell & Boyd, 1975 † (basis of record)
Eodonidae J. G. Carter, D. C. Campbell & M. R. Campbell, 2000 † (basis of record)
Eoschizodidae Newell & Boyd, 1975 † (basis of record)
Epidiceratidae Rengarten, 1950 † (basis of record)
Eritropidae Cope, 2000 † (basis of record)
Etheripectininae Waterhouse, 1982 † (basis of record)
Euchondriidae Newell, 1938 † (basis of record)
Euchondrioidea Newell, 1938 † (basis of record)

 Nomenclature

 for Pedinae Bronn, 1862

The name Pedinae Bronn, 1862 has priority over the better known name Chlamydinae Teppner, 1922 if both are ... [details]