Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
     Family †Scoliostomatidae Frýda, Blodgett & Lenz, 2002
       1 Subfamily †Scoliostomatinae Frýda, Blodgett & Lenz, 2002
       2 Subfamily †Mitchelliinae Frýda, Blodgett & Lenz, 2002