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 Rhizaria Cavalier-Smith, 2002
                                 Phylum Retaria Cavalier-Smith, 2002
                                   Subphylum Radiozoa Cavalier-Smith, 1987
                                     Superclass Polycystinia Ehrenberg, 1838
                                       Class Nassellaria Ehrenberg, 1847
                                         Order Cyrtidinata Haeckel, 1862
                                           Superfamily Eucyrtidioidea Ehrenberg, 1847
                                             Family Eucyrtidiidaeᵀ Ehrenberg, 1847
                                               Subfamily Theocotylinae Petrushevskaya, 1981
                                                 Genus †Cycladophora Ehrenberg, 1847
                                                   01 Cycladophora bicornis (Popofsky, 1908)
                                                   02 †Cycladophora cabrilloensis (Campbell & Clark, 1944)
                                                   03 †Cycladophora campanula Haeckel, 1887
                                                   04 †Cycladophora conica Lombari & Lazarus, 1988
                                                   05 Cycladophora cosma Lombari & Lazarus, 1988
                                                   06 Cycladophora davisiana Ehrenberg, 1861
                                                   07 †Cycladophora golli (Chen, 1975)
                                                   08 †Cycladophora humerus (Petrushevskaya, 1975)
                                                   09 †Cycladophora pliocenica Lombari & Lazarus, 1988
                                                   10 †Cycladophora robusta Lombari & Lazarus, 1988
                                                   11 †Cycladophora sakaii Motoyama, 1996
                                                   12 †Cycladophora spongothorax (Chen, 1975)
                                                   13 †Cycladophora tetracantha (Bjørklund & Kellogg, 1972)