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 Spumellaria Ehrenberg, 1875
                                         Order Cancelliata Afanasieva & Amon, 2003
                                           Family †Haplentactiniidae Nazarov, 1980
                                             Subfamily †Haplentactiniinaeᵀ Nazarov, 1980
                                               1 Genus †Archeoentactinia Won, 1999
                                               2 Genus †Gracilentactinia Kozur & Mostler, 1989
                                               3 Genus †Haplentactiniaᵀ Foreman, 1963
                                               4 Genus †Haplopolus Li, 1994
                                               5 Genus †Magnentactinia Won, 1997
                                               6 Genus †Protobiramus Won, 1999
                                               7 Genus †Rotasphaera Noble, 1994
                                               8 Genus †Secuicollacta Nazarov & Ormiston, 1984
                                               9 Genus †Munzuwonella Afanasieva, 2009