Phylum Mollusca Linnaeus, 1758 - molluscs Subphylum Conchifera Gegenbauer, 1878 Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Orthogastropoda Ponder & Lindberg, 1995 Superorder Heterobranchia Burmeister, 1837 Order Pulmonata Cuvier, 1814 Suborder Systellommatophora Pilsbry, 1948 Superfamily Onchidioidea Rafinesque, 1815 Family Onchidiidae Rafinesque, 1815