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 Collodaria Haeckel, 1881 [monotypic]
                                         Order Collodaridaᵀ Haeckel, 1881
                                           Family Thalassicollidae Haeckel, 1862 [polyphyletic]
                                             1 Genus Lampoxanthium Haeckel, 1887
                                             2 Genus Physematium Meyen, 1834
                                             3.1 Genus Procyttarium Haeckel, 1879
                                             3.2 Genus Actissa Haeckel, 1884
                                             4 Genus Thalassicollaᵀ Huxley, 1851
                                             5 Genus Thalassolampe Haeckel, 1862
                                             6 Genus Thalassophysa Haeckel, 1881
                                             7 Genus Thalassorhaphis Campbell, 1951
                                             8 Genus Thalassosphaera Haeckel, 1862
                                             9 Genus Thalassoxanthium Haeckel, 1881