Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795 Order Archaeogastropoda Thiele, 1925 see Order Vetigastropoda Salvini-Plawen, 1980 Superfamily Trochacea see Superfamily Trochoidea Rafinesque, 1815 Family Trochidae Rafinesque, 1815 - top snails Genus "Trochus" Linnaeus, 1758