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]
           neomura Cavalier-Smith, 1987
             Eukaryota Chatton, 1925 - eukaryotes
               discaria Cavalier-Smith, 2021
                 natates Cavalier-Smith, 2021
                   photaria Cavalier-Smith, 2021
                     eucorta Cavalier-Smith, 2021
                       [node-based clade] Corticata Lankester, 1878 - corticates
                         Chromista Caval.-Sm. (1981) - chromists
                           Harosa Cavalier-Smith, 2010
                             [crown clade] Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
                               Halvaria Cavalier-Smith, 2010
                                 Alveolata Cavalier-Smith, 1991
                                   Ciliophora Doflein, 1901 - ciliates
                                     Intramacronucleata Lynn, 1996 - amphiesmates
                                       Oligohymenophorea de Puytorac et al., 1974 - oligohymenophoreans
                                         Hymenostomatia (Delage & Hérouard, 1896) Cavalier-Smith, 1993 - hymenostome ciliates
                                           [Hymenostomatida Delage & Hérouard, 1896] see Subclass Hymenostomatia (Delage & Hérouard, 1896) Cavalier-Smith, 1993
                                             [Paramaecium Müller, 1773] see Genus Paramecium Müller, 1773
                                               [Paramaecium aurelia Müller, 1773] see Paramecium aurelia O.F. Müller, 1773