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 Thecostraca Gruvel, 1905 - barnacles 1 Infraclass Facetotecta Grygier, 1985 2 Infraclass Ascothoracida Lacaze-Duthiers, 1880 3 Infraclass Cirripedia Burmeister, 1834 - barnacles