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
           Order Calanoida Sars, 1903
             Genus Calanus Leach, 1816
             Genus Diaptomus Westwood, 1836
             Genus Eucalanus Dana, 1852
             Genus Euchaeta Philippi, 1843
             Genus Platycopia G.O. Sars, 1911