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 Anadoridoidea Vaught, 1989, nom. inval.
             Family Gymnodorididae Odhner, 1941
               1 Genus Gymnodoris Stimpson, 1855
               2 Genus Analogium Risbec, 1928
               3 Genus Angasiella Crosse, 1864
               4 Genus Lecithophorus Macnae, 1958
               5 Genus Nembrotha Bergh, 1877
               6 Genus Paliolla Burn, 1958
               7 Genus Roboastra Bergh, 1877
               8 Genus Tambja Burn, 1962