Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
     Clade Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
       Superfamily †Palaeostyloidea Wenz, 1938, incertae sedis
         1 Family †Palaeostylidae Wenz, 1938
         2 Family †Goniasmatidae Nützel & Bandel, 2000
         3 Family †Pithodeidae Wenz, 1938