Agnomyax R. B. Stewart, 1930 (original description)
Americardia R. B. Stewart, 1930 (original description)
Bathytormus R. B. Stewart, 1930 (original description)
Calorhadia R. B. Stewart, 1930 † (original description)
Calorhadia (Litorhadia) R. B. Stewart, 1930 † (original description)
Claibornites R. B. Stewart, 1930 † (original description)
Claibornites (Codalucina) R. B. Stewart, 1930 † represented as
Claibornites R. B. Stewart, 1930 † (original description)
Claibornites (Saxolucina) R. B. Stewart, 1930 † accepted as
Saxolucina R. B. Stewart, 1930 † (original description)
Delectopecten R. B. Stewart, 1930 (original description)
Eophysema R. B. Stewart, 1930 † (original description)
Eucrassatella (Hybolophus) R. B. Stewart, 1930 accepted as
Hybolophus R. B. Stewart, 1930 (original description)
Fraginae R. B. Stewart, 1930 (original description)
Glyptoactis R. B. Stewart, 1930 † (original description)
Loripinus (Eophysema) R. B. Stewart, 1930 accepted as
Eophysema R. B. Stewart, 1930 † (original description)
Loripinus (Pegophysema) R. B. Stewart, 1930 accepted as
Pegophysema R. B. Stewart, 1930 (original description)
Lucina Bruguière, 1797 (additional source)
Microcallista R. B. Stewart, 1930 † accepted as
Callista Poli, 1791 (original description)
Neithea (Neitheops) R. B. Stewart, 1930 † represented as
Neithea Drouët, 1825 † (original description)
Noetiidae R. B. Stewart, 1930 (original description)
Palliolum (Delectopecten) R. B. Stewart, 1930 † accepted as
Delectopecten R. B. Stewart, 1930 (original description)
Parallelodon (Nanonavis) R. B. Stewart, 1930 † (original description)
Pitarinae R. B. Stewart, 1930 accepted as
Callocardiinae Dall, 1895 (original description)
Plagiocardium (Schedocardia) R. B. Stewart, 1930 † accepted as
Schedocardia R. B. Stewart, 1930 † (original description)
Solen (Eosolen) R. B. Stewart, 1930 † accepted as
Solena (Eosolen) R. B. Stewart, 1930 † represented as
Solena Mörch, 1853 (original description)
Stereomactra Stewart, 1930 † (original description)
Trachycardiinae R. B. Stewart, 1930 (original description)
Trachycardium (Agnocardia) R. B. Stewart, 1930 † accepted as
Agnocardia R. B. Stewart, 1930 † (original description)
Trachycardium (Dallocardia) R. B. Stewart, 1930 accepted as
Dallocardia R. B. Stewart, 1930 (original description)
Trachycardium (Mexicardia) R. B. Stewart, 1930 represented as
Trachycardium Mörch, 1853 (original description)
Trachycardium (Phlogocardia) R. B. Stewart, 1930 represented as
Trachycardium Mörch, 1853 (original description)
Trapezium Megerle von Mühlfeld, 1811 (subsequent type designation)
Trigonia evansana var. oregona [sic] † accepted as
Notoscabrotrigonia oregana (E. L. Packard, 1921) † (basis of record)
Trigoniocardia (Americardia) R. B. Stewart, 1930 accepted as
Americardia R. B. Stewart, 1930 (original description)
Turnus plenus Gabb, 1864 † (additional source)
Venerella (Compsomyax) R. B. Stewart, 1930 † accepted as
Compsomyax R. B. Stewart, 1930 (original description)
Venericardia (Venericor) R. B. Stewart, 1930 † accepted as
Venericor R. B. Stewart, 1930 † (original description)