[Kingdom] Animalia Linnaeus, 1758 - animals
   Grade Enterozoa
     Grade Cœlomata
       Phylum Appendiculata {Lankester}
         Branch Gnathopoda Straus-Durkheim, 1829
           Grade Condylopoda
             Class Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
               Grade Entomostraca
                 1 Order Cirrhipedia
                 2 Order Copepoda H. Milne-Edwards, 1840 see Class Copepoda H. Milne-Edwards, 1840
                 3 Order Ostracoda Latreille, 1806 see Class Ostracoda Latreille, 1802
                 4 Order Branchiopoda Latreille, 1817