Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Heteroconchia Gray, 1854
       Clade Heterodonta Neumayr, 1884
         Order Pholadomyida Newell, 1965
           Septibranchia Pelseneer, 1888
             Superfamily Verticordioidea Stoliczka, 1870
               1 Family Verticordiidae Stoliczka, 1870
               2 Family Euciroidae Dall, 1895
               3 Family Lyonsiellidae Dall, 1895