Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Heteroconchia Gray, 1854
       Clade Heterodonta Neumayr, 1884
         Order Pholadomyida Newell, 1965
           Superfamily Thracioidea Stoliczka, 1870 (1839)
             1 Family Thraciidae Stoliczka, 1870 (1839)
             2 Family Laternulidae Hedley, 1918
             3 Family Periplomatidae Dall, 1895