Kingdom Protozoa Goldfuss, 1818 - protozoa
   1 Subkingdom Gymnomyxa (Lankester, 1878) Cavalier-Smith, 2002 see Kingdom Protozoa Goldfuss, 1818
   2 Subkingdom Corticata Lankester, 1878 see Subkingdom Biciliata
   3 [Panstomata Saville Kent, 1880] see Subkingdom Gymnomyxa (Lankester, 1878) Cavalier-Smith, 2002
   4 [Corticoflagellata Cavalier-Smith, 1978]