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 ?Phylum Apusozoa Cavalier-Smith, 1997 see Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013