Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         Kingdom Chromista Caval.-Sm. (1981) - chromists
                           Subkingdom Harosa Cavalier-Smith, 2010
                             [crown] Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
                               Infrakingdom Halvaria Cavalier-Smith, 2010
                                 Superphylum Alveolata Cavalier-Smith, 1991
                                   Phylum Ciliophora Doflein, 1901 - ciliates
                                     Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
                                       Class Spirotrichea Bütschli, 1889
                                         Subclass Stichotrichia Small & Lynn, 1985
                                           Order Sporadotrichida Fauré-Fremiet, 1961
                                             Family Oxytrichidae Ehrenberg, 1838
                                               Subfamily Oxytrichinaeᵀ Jankowski
                                                 Genus Urosomoida Hemberger, in Foissner, 1982
                                                   Urosomoida agilisᵀ (Engelmann, 1862) Hemberger, in Foissner, 1982
                                                   Urosomoida deserticola Foissner et al., 2002
                                                   Urosomoida monostyla Foissner et al., 2002
                                                   Urosomoida namibiensis Foissner et al., 2002
                                                   Urosomoida reticulata Foissner et al., 2002