Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
       Order Venerida Gray, 1854
         Superfamily Galeommatoidea Gray, 1840
           Family Montacutidae Clark, 1855 see Family Lasaeidae Gray, 1842
             Subfamily Thecodontinae Bernard, 1983
               1 Genus Thecodonta Adams, 1864
               2 Genus Pristes Carpenter, 1864