Phylum Mollusca Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795 Order Neogastropoda Wenz, 1938 see Suborder Neogastropoda Wenz, 1938 Superfamily Conacea Rafinesque, 1815 see Superfamily Conoidea Fleming, 1822