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 Clavacea Family Turritellidae Lovén, 1847 - turret snails 1 Genus Turritella Lamarck, 1799 2 Genus †Motyris Eames, 1952 3 Genus Mesalia Gray, 1847