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 Pteropsellinae Keen, 1969 see Subfamily Kymatoxinae Stenzel & Krause, 1957
               1 Genus Anatina Schumacher, 1817
               2 Genus Raeta Gray, 1853