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 Mesodesmatidae Gray, 1840
             1 Genus Donacilla Philippi, 1836
             2 Subfamily Mesodesmatinae Gray, 1840
             3 Subfamily Davilinae Dall, 1895
             4 Subfamily Erviliinae Dall, 1895