Kingdom Protozoa Goldfuss, 1818 - protozoa Subkingdom Gymnomyxa (Lankester, 1878) Cavalier-Smith, 2002 see Kingdom Protozoa Goldfuss, 1818 Infrakingdom Rhizaria Cavalier-Smith, 2002 Phylum Heliozoa Haeckel, 1866 see Subphylum Heliozoa Haeckel (1866) Class Centrohelea Kühn, 1926