Kingdom Protozoa Goldfuss, 1818 - protozoa
   Subkingdom Gymnomyxa (Lankester, 1878) Cavalier-Smith, 2002 see Kingdom Protozoa Goldfuss, 1818
     1 Infrakingdom Sarcomastigota Cavalier-Smith, 1983 see Subkingdom Sarcomastigota Cavalier-Smith, 1983
     2 Infrakingdom Rhizaria Cavalier-Smith, 2002