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 Eudoridoidea Vaught, 1989, nom. inval. see Superfamily Doridoidea Rafinesque, 1815
             01 Family Hexabranchidae Bergh, 1891 [monotypic]
             02 Family Cadlinidae Bergh, 1891 see Family Chromodorididae Bergh, 1891, nom. protect.
             03 Family Chromodorididae Bergh, 1891, nom. protect.
             04 Family Actinocyclidae O'Donoghue, 1929
             05 Family Miamiridae Bergh, 1891 see Family Chromodorididae Bergh, 1891, nom. protect.
             06 Family Conualeviidae Collier & Farmer, 1964 see Family Dorididae Rafinesque, 1815
             07 Family Aldisidae Odhner, 1939 [monotypic] see Family Dorididae Rafinesque, 1815
             08 Family Rostangidae Pruvot-Fol, 1951 see Family Discodorididae Bergh, 1891
             09 Family Dorididae Rafinesque, 1815
             10 Family Archidorididae Bergh, 1891 see Family Dorididae Rafinesque, 1815
             11 Family Geitodorididae Odhner, 1968 [monotypic] see Family Discodorididae Bergh, 1891
             12 Family Homoiodorididae Odhner, 1926 [monotypic] see Family Dorididae Rafinesque, 1815
             13 Family Discodorididae Bergh, 1891
             14 Family Kentrodorididae Bergh, 1891 see Family Discodorididae Bergh, 1891
             15 Family Halgerdidae Odhner, 1926 see Family Discodorididae Bergh, 1891
             16 Family Platydorididae Bergh, 1891 see Family Discodorididae Bergh, 1891