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]
           Superfamily Dendronotoidea Sars, 1878 see Superfamily Tritonioidea Lamarck, 1809
             01 Family Tritoniidae Lamarck, 1809
             02 Family Marianinidae Odhner, 1968 see Family Aranucidae Odhner, 1936
             03 Family Lomanotidae Bergh, 1890 [monotypic]
             04 Family Scyllaeidae Alder & Hancock, 1855
             05 Family Hancockiidae MacFarland, 1923 [monotypic]
             06 Family Dendronotidae Allman, 1845 [monotypic]
             07 Family Bornellidae Bergh, 1874
             08 Family Tethyidae Gill, 1871, orth. inval. see Family Tethydidae Rafinesque, 1815
             09 Family Dotidae Gray, 1853
             10 Family Phylliroidae Menke, 1830