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 Kentrogonida Delage, 1884 see Order Kentrogonida Delage, 1884
                   Family Lernaeodiscidae Boschma, 1928
                     1 Genus Lernaeodiscusᵀ Mueller, 1862
                     2 Genus Triangulus Smith, 1906
                     3 Genus Parthenopea Kossmann, 1874
                     4 Genus Septodiscus
                     5 Genus Triangulopsis Döring, 1961