living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryotae see Domain Eukaryota Chatton, 1925
     Animalia Linnaeus, 1758 - animals
       Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Arthropoda Siebold, 1848 - arthropods
           Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
             Cirripedia Lamarck - barnacles and their kin see Infraclass Cirripedia Burmeister, 1834
               Acrothoracica Gruvel, 1905 - boring barnacles see Superorder Acrothoracica Gruvel, 1905
                 1 Weltneria Berndt, 1908
                 2 Pygophora Berndt, 1907 see Order Pygophora Berndt, 1907
                 3 Apygophora Berndt, 1907 see Order Apygophora Berndt, 1907