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
                                           01 Genus Cossothigma Jankowski, 1978
                                           02 Genus Hemianthophorus Ehrenberg, 1838
                                           03 Genus Paramitrella Jankowski, 1978
                                           04 Genus Pelagotrichidium Jankowski, 1978
                                           05 Genus Pescozoon Jankowski, 1978
                                           06 Genus Saudithrix Foissner, Al-Rasheid & Berger, 2006 [monotypic]
                                           07 Genus Stenotricha Jankowski, 1978
                                           08 Genus Uncinata Bullington, 1940
                                           09 Genus Gastrosticha Kahl, 1932, nom. dub.
                                           10 Order Urostylida Jankowski, 1979
                                           11 Order Stichotrichidaᵀ Fauré-Fremiet, 1961
                                           12 Order Sporadotrichida Fauré-Fremiet, 1961