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
           Order Rhizocephala Müller, 1862 see Superorder Rhizocephala Müller, 1862
             Genus Heterosaccus Smith, 1906
             Genus Mycetomorpha Potts, 1912
             Genus Peltogaster Rathke, 1843
             Genus Sacculina Thompson, 1836
             Genus Sylon Kröyer, 1855
             Genus Thompsonia Kossmann, 1872