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]
           neomura Cavalier-Smith, 1987
             Eukaryota Chatton, 1925 - eukaryotes
               discaria Cavalier-Smith, 2021
                 natates Cavalier-Smith, 2021
                   photaria Cavalier-Smith, 2021
                     eucorta Cavalier-Smith, 2021
                       [node-based clade] Corticata Lankester, 1878 - corticates
                         Chromista Caval.-Sm. (1981) - chromists
                           Hacrobia Okamoto, Chantangsi, Horák, Leander & Keeling, 2009
                             Haptista Cavalier-Smith, 2003
                               [branch-based clade] Haptophytina Caval.-Sm. (2015)
                                 Coccolithophyceae Rothm. (1951)
                                   "Heterococcoliths"
                                     "Muroliths"
                                       †Eiffellithales Rood, Hay & Barnard (1971)
                                         †Chiastozygaceae Rood, Hay & Barnard (1973)
                                           ?†Bownia Varol & Girgis (1994)
                                             †Bownia mutterlosei