[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Crustacea (Brünnich, 1772) - crustaceans see Superclass Crustacea Pennant, 1777
     Subclass Copepoda H. Milne-Edwards, 1840 - copepods
       Order Calanoida Sars, 1903
         Family Paracalanidae Giesbrecht, 1893
           1 Genus Acrocalanus Giesbrecht, 1888
           2 Genus Calocalanus Giesbrecht, 1888
           3 Genus Delius Andronov, 1972, nom. illeg. see Genus Delibus F. Vives & A.A. Shmeleva, 2007
           4 Genus Ischnocalanus Bernard, 1963 see Genus Calocalanus Giesbrecht, 1888
           5 Genus Paracalanus Boeck, 1865