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 Polyhymenophora Jankowski, 1967 see Class Spirotrichea Bütschli, 1889
             Subclass Spirotricha see Class Spirotrichea Bütschli, 1889
               Order Hypotrichida Stein, 1859 - hypotrichs see Subclass Hypotrichia (Stein, 1859) Cavalier-Smith, 1993
                 Suborder Sporadotrichina Fauré-Fremiet, 1961 see Order Sporadotrichida Fauré-Fremiet, 1961
                   Family Euplotidae Ehrenberg, 1838
                     1 Genus Certesia Fabre-Domergue, 1885
                     2 Genus Cytharoides Tuffrau, 1974[1975]
                     3 Genus Diophrys Dujardin, 1840, nom. nud.
                     4 Genus Discocephalus Ehrenberg, 1831
                     5 Genus Euplotes Ehrenberg, 1830
                     6 Genus Swedmarkia Dragesco, 1954
                     7 Genus Uronychia Stein, 1857[1859]