Natura - nature
Status: extant
   actualia - actual entities
  Status: extant
     Mundus Plinius - physical world
    Status: extant
       naturalia - natural bodies
      Status: extant
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
        Distribution: cosmopolitan (marine, brackish, freshwater, terrestrial & aerial); Period: Archean - Present (3770 - 0 Mya); Status: extant
           Clade neomura Cavalier-Smith, 1987
          Distribution: cosmopolitan (marine, brackish, freshwater & terrestrial); Period: Archean - Present (3420 - 0 Mya); Status: extant
             Domain Eukaryota Chatton, 1925 - eukaryotes
            Distribution: cosmopolitan (marine, brackish, freshwater & terrestrial); Period: Proterozoic - Present (1650 - 0 Mya); Status: extant
               Clade discaria Cavalier-Smith, 2021
              Distribution: cosmopolitan (marine, brackish, freshwater & terrestrial); Period: Proterozoic - Present [2500 Mya - present]; Status: extant
                 Clade natates Cavalier-Smith, 2021
                Status: extant
                   Clade photaria Cavalier-Smith, 2021
                  Status: extant
                     Clade eucorta Cavalier-Smith, 2021
                    Status: extant
                       Superkingdom Corticata Lankester, 1878 - corticates
                      Status: extant
                         Kingdom Chromista Caval.-Sm. (1981) - chromists
                        Distribution: Asia; Status: extant
                           Subkingdom Hacrobia Okamoto, Chantangsi, Horák, Leander & Keeling, 2009
                          Status: extant
                             Phylum Haptista Cavalier-Smith, 2003
                            Status: extant
                               Subphylum Heliozoa Haeckel (1866) [monotypic]
                              Status: extant
                                 Class Centroheleaᵀ Kühn, 1926 [monotypic]
                                Status: extant
                                   Order Centrohelidaᵀ Kühn, 1926
                                  Status: extant
                                     Suborder Acanthocystina Cavalier-Smith & von der Heyden, 2007
                                    Status: extant
                                       1 Family Acanthocystidaeᵀ Claus, 1874
                                      Status: extant
                                       2 Family Raphidiophryidae Mikrjukov, 1996
                                      Status: extant
                                       3 Family Marophryidae Cavalier-Smith & von der Heyden, 2007 [monotypic]
                                      Status: extant