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 Laevicardiinae Keen, 1951
               1 Genus Laevicardium Swainson, 1840
               2 Genus Clinocardium Keen, 1936
               3 Genus Keenocardium Kafanov, 1974
               4 Genus Yagudinella Kafanov, 1975