Phylum Mollusca Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Pulmonata Cuvier, 1814 [monotypic] - land snails and slugs see Order Pulmonata Cuvier, 1814 Order Archaeopulmonata Morton, 1955 see Suborder Archaepulmonata Superfamily Ellobioidea Pfeiffer, 1854 (1822) Family Ellobiidae Pfeiffer, 1854 (1822) Subfamily Ellobiinae Pfeiffer, 1854 (1822) Genus Cassidulta Strand, 1942