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 Arthropoda Siebold, 1848 - arthropods
           Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
             Subclass Cirripedia Lamarck - barnacles and their kin see Infraclass Cirripedia Burmeister, 1834
               Order Rhizocephala Müller, 1862 see Superorder Rhizocephala Müller, 1862
                 Suborder Akentrogonida Häfele, 1911 see Order Akentrogonida Häfele, 1911
                   1 Family Chthamalophilidae J. Bocquet-Védrine, 1961
                   2 Family Akentrogonidae see Order Akentrogonida Häfele, 1911