Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Pteriomorphia Beurlen, 1944
       Order Pectinida Gray, 1854
         Superfamily †Heteropectinoidea Beurlen, 1954
           Family †Heteropectinidae Beurlen, 1954
             1 Subfamily †Heteropectininae Beurlen, 1954
             2 Subfamily †Etheripectininae Waterhouse, 1982
             3 Subfamily †Cassianoidinae Newell & Boyd, 1995
             4 Subfamily †Girtypectininae Waterhouse, 2008