living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Status: extant
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
  Status: extant
     Kingdom Animalia Linnaeus, 1758 - animals
    Status: extant
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
      Status: extant
         Phylum Mollusca Linnaeus, 1758 - molluscs
        Status: extant
           Class Gastropoda Cuvier, 1795 - snails and slugs
          Status: extant
             Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs see Order Opisthobranchia Milne-Edwards, 1848
            Status: extant
               Order Nudibranchia Cuvier, 1814 - "true" nudibranchs
              Status: extant
                 Suborder Doridoidea Rafinesque, 1815 see Suborder Doridina Odhner, 1934
                Status: extant
                   Superfamily Anadoridacea Boss, 1982, nom. inval., orth. inval. see Superfamily Anadoridoidea Vaught, 1989, nom. inval.
                  Status: extant
                     Nonsuctoria Bergh, 1892 see Superfamily Polyceroidea Alder & Hancock, 1845
                    Status: extant
                       1 Family Triophidae Odhner, 1941 see Tribe Triophini Odhner, 1941
                      Status: extant
                       2 Family Aegiretidae Fischer, 1883
                      Status: extant
                       3 Family Polyceratidae see Family Polyceridae Alder & Hancock, 1845
                      Status: extant
                       4 Family Gymnodorididae Odhner, 1941
                      Status: extant
                       5 Family Vayssiereidae Thiele, 1931 see Family Okadaiidae Baba, 1930
                      Status: extant