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 Phyllopharyngea de Puytorac et al., 1974
                                         Subclass Suctoria Claparède & Lachmann, 1858 - suctorians
                                           Order Evaginogenida Jankowski, 1978
                                             Family Discophryidae Collin, 1912
                                               Genus Discophryaᵀ Lachmann, 1859
                                                 Discophrya buckei (Kent)
                                                 Discophrya elegans Goodrich & Jahn, 1943
                                                 Discophrya erlangensis Matthes, 1954
                                                 Discophrya lichtensteinii (Claparède & Lachmann) Collin, 1912
                                                 Discophrya longa Swarczewsky, 1928
                                                 Discophrya obtecta Swarczewsky, 1928
                                                 Discophrya speciosaᵀ Lachmann, 1859
                                                 Discophrya stammeri Matthes, 1954
                                                 Discophrya steinii (Claparède & Lachmann, 1859) Collin, 1911