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 Doridina Odhner, 1934
Superfamily Gnathodoridoidea Schmekel & Portmann, 1982, nom. inval.
1 Family Doridoxidae Bergh, 1899 [monotypic]
2 Family Bathydorididae Bergh, 1891 [monotypic]