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
         Infraclass Neocopepoda Huys & Boxshall, 1991
           Superorder Podoplea Giesbrecht, 1882
             Order Cyclopoida Sars, 1886
               01 Family Archinotodelphyidae Lang, 1949
               02 Family Ascidicolidae Thorell, 1860
               03 Family Buproridae Thorell, 1859
               04 Family Chordeumiidae Boxshall, 1988
               05 Family Cucumaricolidae Bouligand & Delamare-Deboutteville, 1959
               06 Family Cyclopidae Rafinesque, 1815
               07 Family Cyclopinidae G.O. Sars, 1913
               08 Family Fratiidae Ho et al., 1998
               09 Family Lernaeidae Cobbold, 1879
               10 Family Mantridae Leigh-Sharpe, 1934
               11 Family Notodelphyidae Dana, 1852
               12 Family Oithonidae Dana, 1852
               13 Family Ozmanidae Ho & Thatcher, 1989
               14 Family Speleoithonidae da Rocha & Iliffe, 1991
               15 Family Thaumatopsyllidae G.O. Sars, 1913