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 Tellinoidea Blainville, 1814
           Family Psammobiidae Fleming, 1828 - sunset clams
             Subfamily Sanguinolariinae Grant, 1931
               Genus Sanguinolaria Lamarck, 1799
                 Subgenus Hainania Skarlato, 1965, nom. illeg. see Genus Nuttallia Dall, 1898