Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Heteroconchia Gray, 1854
       Clade Heterodonta Neumayr, 1884
         Order †Orthonotida Pojeta, 1978 [monotypic]
           Superfamily †Orthonotoidea Miller, 1877
             1 Family †Orthonotidae Miller, 1877
             2 Family †Konduriidae Sánchez, 2007
             3 ?Family †Prothyridae Miller, 1889
             4 Family †Solenomorphidae Cockerell, 1915