living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Arthropoda Siebold, 1848 - arthropods
           Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
             Subclass Copepoda H. Milne-Edwards, 1840 - copepods
               Order Calanoida Sars, 1903
                 Suborder Heterarthrandria see Order Calanoida Sars, 1903
                   01 Family Temoridae Giesbrecht, 1893
                   02 Family Metridiidae Sars, 1902, nom. illeg. see Family Metridinidae G.O. Sars, 1902, nom. emend.
                   03 Family Centropagidae Giesbrecht, 1893
                   04 Family Diaptomidae Baird, 1850
                   05 Family Pseudodiaptomidae G.O. Sars, 1902
                   06 Family Lucicutiidae G.O. Sars, 1902
                   07 Family Heterorhabdidae G.O. Sars, 1902
                   08 Family Augaptilidae G.O. Sars, 1905
                   09 Family Discoidae Gordeeva, 1975
                   10 Family Arietellidae G.O. Sars, 1902
                   11 Family Epacteriscidae Fosshagen, 1973
                   12 Family Phyllopidae see Family Phyllopodidae Brodsky, 1950, nom. illeg.
                   13 Family Pseudocyclopidae Giesbrecht, 1893
                   14 Family Ridgewayiidae M.S. Wilson, 1958
                   15 Family Candaciidae Giesbrecht, 1893
                   16 Family Pontellidae Dana, 1852
                   17 Family Parapontellidae Giesbrecht, 1893
                   18 Family Bathypontiidae Brodsky, 1950
                   19 Family Acartiidae G.O. Sars, 1903
                   20 Family Tortanidae G.O. Sars, 1902