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
             Family Bornellidae Bergh, 1874
               1 Genus Bornella Gray, 1850
               2 Genus Bornellopsis O'Donoghue, 1929
               3 Genus Pseudobornella Baba, 1932