eukaryotes see Domain Eukaryota Chatton, 1925
   Superkingdom Corticata Lankester, 1878 - corticates
     Kingdom Chromista Caval.-Sm. (1981) - chromists
       Subkingdom Hacrobia Okamoto, Chantangsi, Horák, Leander & Keeling, 2009
         Phylum Haptista Cavalier-Smith, 2003
           1 Subphylum Haptophytina Caval.-Sm. (2015)
           2 Subphylum Heliozoa Haeckel (1866) [monotypic]