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 neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
                 Clade neozoa Cavalier-Smith 1993
                   Superkingdom Corticata Lankester, 1878
                     Kingdom Chromista Caval.-Sm. (1981) - chromists
                       Subkingdom Harosa Cavalier-Smith, 2010
                         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
                                       01 Family Eucyrtidiidaeᵀ Ehrenberg, 1847
                                       02 Family †Planispinocyrtidae Kozur & Mostler, 1981
                                       03 Family †Ruesticyrtiidae Kozur & Mostler, 1979
                                       04 Family †Pseudodictyomitridae Pessagno, 1977
                                       05 Family †Eucyrtidiellidae Takemura, 1986 [monotypic]
                                       06 Family †Obeliscoitidae O'Dogherty, 1994
                                       07 Family †Xitidae Pessagno, 1977
                                       08 Family †Williriedellidae Dumitrica, 1970
                                       09 Family Carpocaniidae Haeckel, 1881
                                       10 Family Artostrobiidae Riedel, 1967
                                       11 Family Pterocoryidae Haeckel, 1881
                                       12 Family Lophocyrtiidae Sanfilippo & Caulet, 2001