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 Litostomatea Small & Lynn, 1981
Subclass Trichostomatia Bütschli, 1889
Order Vestibuliferida de Puytorac et al., 1974
Family Balantidiidae Reichenow, in Doflein & Reichenow, 1929
Genus Balantidiumᵀ Claparède & Lachmann, 1858
Balantidium coli (Malmsten, 1857) Stein, 1863
Balantidium elongatum Stein, 1867
Balantidium entozoonᵀ (Ehrenberg, 1838) Claparède & Lachmann, 1858
Balantidium suis
Balantidium xenopi Puytorac & Grain, 1965