living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         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 Dendronotoidea Allman, 1845 see Suborder Dendronotina Odhner, 1934
                   01 Family Tritoniidae Lamarck, 1809
                   02 Family Marianinidae Odhner, 1968 see Family Aranucidae Odhner, 1936
                   03 Family Lomanotidae Bergh, 1890
                   04 Family Scyllaeidae Alder & Hancock, 1855
                   05 Family Hancockiidae MacFarland, 1923
                   06 Family Dendronotidae Allman, 1845
                   07 Family Bornellidae Bergh, 1874
                   08 Family Tethyidae Gill, 1871, orth. inval. see Family Tethydidae Rafinesque, 1815
                   09 Family Dotoidae J.E. Gray, 1853 see Family Dotidae Gray, 1853
                   10 Family Phyllirhoidae orth. inval. see Family Phylliroidae Menke, 1830
                   10 Family Phylliroidae Menke, 1830