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 Cercozoa Cavalier-Smith, 1998
                                   Subphylum Monadofilosaᵀ Cavalier-Smith, 1997
                                     Class Imbricatea T. Cavalier-Smith & E.E.-Y. Chao, 2003
                                       Subclass Placonuda
                                         Order Discocelida Cavalier-Smith, 1997 [monotypic]
                                           [Family Discocelidaeᵀ Cavalier-Smith, 1993, nom. illeg. [monotypic]] see Family Discoceliidae Cavalier-Smith, 2012
                                             [Genus Discocelisᵀ Vørs, 1988, nom. illeg.] see Genus Discocelia Cavalier-Smith, 2012
                                               1 [Discocelis saleutaᵀ Vørs, 1988] see Discocelia saleuta (Vørs, 1988)
                                               2 [Discocelis punctata Larsen & Patterson, 1990] see Discocelia punctata (Larsen & Patterson, 1990)