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 Copepoda H. Milne-Edwards, 1840 - copepods
           1 Order Calanoida Sars, 1903
           2 Order Harpacticoida Sars, 1903
           3 Order Cyclopoida Sars, 1886
           4 Order Poecilostomatoida Thorell, 1859
           5 Order Siphonostomatoida Thorell, 1859
           6 Order Monstrilloida Sars, 1901
           7 Order Misophrioida Gurney, 1933
           8 Order Mormonilloida Boxshall, 1979