Phylum Mollusca Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Gymnomorpha Salvini-Plawen, 1970 see Subclass Pulmonata Cuvier, 1814 Order Rhodopida Fischer, 1883 [monotypic] see Order Systellommatophora Pilsbry, 1948 1 Family Rhodopidae Ihering, 1876 [monotypic]