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 Cephalocarida H.L. Sanders, 1955 see Class Cephalocarida H.L. Sanders, 1955
               1 Genus Hutchinsoniella Sanders, 1955
               2 Genus Lightiella M. Jones, 1961
               3 Genus Sandersiella Shiino, 1965
               4 Genus Chiltoniella Knox & Fenwick, 1977