Phylum Mollusca Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795 Superorder Archaeogastropoda Thiele, 1925 Order Docoglossa Troschel, 1866 1 Suborder Euomphalina de Koninck, 1881 see Superfamily Euomphaloidea White, 1877