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 Subphylum Heliozoa Haeckel (1866) [monotypic] Class Centrohelea Kühn, 1926 Genus Polyplacocystis Mikrjukov, 1996