Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Heteroconchia Gray, 1854
       Clade Heterodonta Neumayr, 1884
         01 Family †Anodontopsidae Miller, 1889
         02 Family †Baidiostracidae Fang & Cope, 2008
         03 Family †Carydiidae Haffer, 1959
         04 Family †Intihuarellidae Sánchez, 2003
         05 Family †Lyrodesmatidae Fischer, 1886
         06 Family †Montanariidae Scarlato & Starobogatov, 1979
         07 Family †Nyassidae Miller, 1877
         08 Family †Pseudarcidae Scarlato & Starobogatov, 1979
         09 Family †Redoniidae Babin, 1966
         10 Family †Tanaodontidae Liu, 1976
         11 Family †Zadimerodiidae Guo, 1988
         12 Order Lucinida Gray, 1854
         13 Order †Actinodontida Dechaseaux, 1952 [monotypic]
         14 Order Carditida Dall, 1889
         15 Superfamily †Anthracosioidea Amalitzky, 1892
         16 †"Megalodonts"
         17 Order †Hippuritida Newell, 1965
         18 Order Venerida Gray, 1854
         19 Order Myida Stoliczka, 1870
         20 Superfamily Hiatelloidea Gray, 1824 [monotypic]
         21 Superfamily Solenoidea Lamarck, 1809
         22 Superfamily †Modiomorphoidea Miller, 1877
         23 Superfamily †Kalenteroidea Marwick, 1953 [monotypic]
         24 Superfamily Gastrochaenoidea Gray, 1840 [monotypic]
         25 Order Pholadomyida Newell, 1965
         26 Order †Orthonotida Pojeta, 1978 [monotypic]