Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
     Clade Neritimorpha Koken, 1896 see Order Neritimorpha Golikov & Starobogatov, 1975
       Clade Cycloneritimorpha Frýda, 1998
         Superfamily Helicinoidea Férussac, 1822
           1 Family Helicinidae Férussac, 1822 - helicinids
           2 Family †Dawsonellidae Wenz, 1938
           3 Family †Deianiridae Wenz, 1938
           4 Family Neritiliidae Schepman, 1908
           5 Family Proserpinellidae Baker, 1923
           6 Family Proserpinidae Gray, 1847