Phylum Mollusca Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs see Order Opisthobranchia Milne-Edwards, 1848 Order Nudibranchia Cuvier, 1814 - "true" nudibranchs Suborder Dendronotina Odhner, 1934 [monotypic] 1 Superfamily Dendronotoidea Sars, 1878 see Superfamily Tritonioidea Lamarck, 1809