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 Family Proserpinellidae Baker, 1923