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 Mactroidea Lamarck, 1809
           Family Mactridae Lamarck, 1809 - surf clams
             Subfamily Zenatiinae Dall, 1895
               1 Genus Zenatia Gray, 1853
               2 Genus Darina Gray, 1853
               3 Genus Resania Gray, 1853
               4 Genus Zenatina Gill & Darragh, 1963