Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
       Class Maxillopoda Dahl, 1956 see Subphylum Pancrustacea Zrzavý et al., 1997
         Subclass Cirripedia Lamarck - barnacles and their kin see Infraclass Cirripedia Burmeister, 1834
           1 Order Thoracica Darwin, 1854 - goose and acorn barnacles see Superorder Thoracica Darwin, 1854
           2 Order Ascothoracica see Infraclass Ascothoracida Lacaze-Duthiers, 1880
           3 Order Acrothoracica Gruvel, 1905 - boring barnacles see Superorder Acrothoracica Gruvel, 1905
           4 Order Rhizocephala Müller, 1862 see Superorder Rhizocephala Müller, 1862