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 Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855 Superfamily Ariophantacea see Superfamily Limacacea 1 Family Trochomorphidae Möllendorff, 1890 2 Family Helicarionidae Bourguignat, 1877