Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Heteroconchia Gray, 1854
       Clade Heterodonta Neumayr, 1884
         Order Carditida Dall, 1889
           Superfamily Carditoidea Férussac, 1822
             Family Carditidae Férussac, 1822 - little heart shells
               1 Subfamily Carditinae Férussac, 1822
               2 Subfamily Carditamerinae Chavan, 1969
               3 Subfamily Carditesinae Chavan, 1969
               4 Subfamily Miodomeridinae Chavan, 1969
               5 Subfamily Thecaliinae Dall, 1903
               6 Subfamily Venericardiinae Chavan, 1969