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 Oligohymenophorea de Puytorac et al., 1974 - oligohymenophoreans
                                         Subclass Peniculia Fauré-Fremiet, 1956
                                           Order Urocentrida Jankowski, 1980
                                             Family Parameciidae Dujardin, 1840
                                               Genus Parameciumᵀ Müller, 1773
                                                 Paramecium africanum Dragesco, 1970
                                                 Paramecium aureliaᵀ O.F. Müller, 1773
                                                 Paramecium bursaria (Ehr.)
                                                 Paramecium caudatum Ehrenberg, 1838
                                                 Paramecium micronucleatum
                                                 Paramecium multimicronucleatum Powers & Mittchell, 1910
                                                 Paramecium pentaurelia
                                                 Paramecium primaurelia
                                                 Paramecium putrinum Claparède & Lachmann, 1859
                                                 Paramecium tetraurelia