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 Halteriidae Claparède & Lachmann, 1858
                                               01 ?Genus Jeannellia Tucolesco, 1962
                                               02 ?Genus Octocirrus Rao, 1928, nom. dub.
                                               03 ?Genus "Spelaeonecta" Jankowski, 1975
                                               04 Genus Cephalotrichium Meunier, 1910
                                               05 Genus Halteriaᵀ Dujardin, 1841
                                               06 Genus Halterioforma Horváth, 1956
                                               07 Genus Meseres Schewiakoff, 1893[1892]
                                               08 Genus Metastrombidium Fauré-Fremiet, 1923
                                               09 Genus Parastrombidium Fauré-Fremiet, 1923
                                               10 Genus Pelagohalteria Foissner et al., 1988