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 Angariidae Thiele, 1924 see Subfamily Angariinae Gray, 1857 1 Genus Angaria Röding, 1798