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 Glossoidea Gray, 1847 (1840)
           1 Family Glossidae Gray, 1847 (1840) - oxheart clams
           2 Family Kelliellidae Fischer, 1887
           3 Family Trapeziidae Lamy, 1920, nom. illeg. see Family Trapezidae Lamy, 1920 (1895), orth. cons.
           4 Family Vesicomyidae Dall & Simpson, 1901