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 Veneroidea Rafinesque, 1815
           Family Veneridae Rafinesque, 1815 - venus clams
             Subfamily Gafrarinae Millard, 1996, orth. inval. [monotypic] see Subfamily Gafrariinae Korobkov, 1954
               Genus Gouldia Adams, 1847
                 Subgenus Gouldiopa Iredale, 1924