Kingdom Animalia Linnaeus, 1758 - animals Phylum Mollusca Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Pulmonata Cuvier, 1814 - land snails and slugs see Order Pulmonata Cuvier, 1814 Order Basommatophora Keferstein, 1865 see Suborder Basommatophora Keferstein, in Bronn, 1864 Genus Physa Draparnaud, 1801