Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
       Order Venerida Gray, 1854
         Superfamily Carditoidea Férussac, 1822
           Family Carditidae Férussac, 1822 - little heart shells
             1 Subfamily Carditinae Férussac, 1822
             2 Subfamily Carditesinae Chavan, 1969
             3 Subfamily Carditamerinae Chavan, 1969
             4 Subfamily Miodomeridinae Chavan, 1969
             5 Subfamily Venericardiinae Chavan, 1969
             6 Subfamily Thecaliinae Dall, 1903