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 Gaimardioidea Hedley, 1916 [monotypic]
           Family Gaimardiidae Hedley, 1916
             1 Genus Gaimardia Gould, 1852
             2 Genus Eugaimardia Cotton, 1931