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 Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818
         Phylum Ciliophora Doflein, 1901 - ciliates
           Class Kinetofragminophora see Class Kinetofragminophorea
             Subclass Gymnostomata see Subclass Gymnostomatia
               Order Karyorelictida see Class Karyorelictea Corliss, 1974
                 Family Trachelocercidae Kent, 1881
                   1 Genus Trachelocerca Ehrenberg, 1833[1834]
                   2 Genus Trachelonema Dragesco, 1958
                   3 Genus Tracheloraphis Dragesco, 1960
                   4 Genus Gruvelina Delphy, 1939
                   5 Genus Nephrocerca Delphy, 1939
                   6 Genus Protrichophora Delphy, 1939