Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795 Order Mesogastropoda Thiele, 1925 - mesogastropods see [unranked] mesogastropods Superfamily Architaenioglossa Haller, 1890 see Order Architaenioglossa Haller, 1892 1 Family Pilidae Preston, 1915, nom. illeg. see Tribe Ampullariini Gray, 1824