[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Crustacea (Brünnich, 1772) - crustaceans see Superclass Crustacea Pennant, 1777
     Subclass Cirripedia Lamarck - barnacles and their kin see Infraclass Cirripedia Burmeister, 1834
       1 Superorder Acrothoracica Gruvel, 1905
       2 Superorder Thoracica Darwin, 1854
       3 Subclass Ascothoracida Lacaze-Duthiers, 1880 see Infraclass Ascothoracida Lacaze-Duthiers, 1880
       4 Superorder Rhizocephala Müller, 1862