Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Heteroconchia Gray, 1854
       Clade Heterodonta Neumayr, 1884
         Order Pholadomyida Newell, 1965
           Superfamily Clavagelloidea d'Orbigny, 1844
             1 Family Clavagellidae d'Orbigny, 1844, nom. protect.
             2 Family Penicillidae Gray, 1858