Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         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
                             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 Peritrichia Stein, 1859
                                           Order Sessilida Kahl, 1933
                                             Family Vaginicolidae de Fromentel, 1874
                                               1 ?Genus Cyclodonta Matthes, 1958
                                               2.1 Genus Cothurnia Ehrenberg, 1832
                                               2.2 Genus Pachytrocha Kent, 1882
                                               3 Genus Cothurniopsis Stokes, 1893
                                               4 Genus Platycola Kent, 1882
                                               5 Genus Pseudothuricola Kahl, 1935
                                               6.1 Genus Pyxicola Kent, 1882
                                               6.2 Genus Caulicola Stokes, 1894
                                               7 Genus Thuricola Kent, 1881
                                               8 Genus Vaginicolaᵀ Lamarck, 1816