Phylum Mollusca Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795 Order Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960 Suborder Architaenioglossa Haller, 1890 Superfamily Vermetoidea Rafinesque, 1815 [monotypic] - worm snails 1 Family Vermetidae Rafinesque, 1815 - worm snails