Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
       Order Chamida see Order Venerida Gray, 1854
         Superfamily Cardioidea Lamarck, 1809
           Family Cardiidae Lamarck, 1809 - cockles
             Subfamily Cardiinae Lamarck, 1809
               1 Genus Cardium Linnaeus, 1758
               2 Genus Acanthocardia Gray, 1851
               3 Genus Agnocardia Stewart, 1930
               4 Genus Loxocardium Cossmann, 1886
               5 Genus Parvicardium Monterosato, 1884
               6 Genus †Plagiocardium Cossmann, 1886
               7 Genus Vepricardium Iredale, 1929
               8 Tribe Vepricardiini Kafanov & Starbogatov, 1977