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 Scuticociliatia (E.B. Small, 1967)
                                           Order Thigmotrichida Chatton & Lwoff, 1922
                                             Family Ancistridae Issel, 1903
                                               1.1 Genus Ancistrumᵀ Maupas, 1883
                                               1.2 Genus Eupoterion MacLennan & Connell, 1931
                                               2 Genus Ancistrumina Raabe, 1959
                                               3 Genus Fenchelia Raabe, 1970
                                               4 Genus Protophrya Kofoid, 1903
                                               4.0 [Genus "Protophyra" nom. null.] see Genus Protophrya Kofoid, 1903
                                               5 Genus Protophryopsis Raabe, 1959
                                               5.0 [Genus "Protophyropsis" nom. null.] see Genus Protophryopsis Raabe, 1959
                                               6 Genus Semiboveria Raabe, 1970
                                               7 Genus Syncilancistrumina Knight & Thorne, 1982
                                               8 Genus "Ancistrella" Cheissin, 1930, nom. nud.