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 Crassatelloidea Férussac, 1822 [monotypic]
           Family Crassatellidae Férussac, 1822
             Subfamily Crassatellinae Férussac, 1822
               Genus Crassatina Kobelt, 1881
                 1 Subgenus Chattonia Marwick, 1929