Kingdom Protozoa Goldfuss, 1818 - protozoa
   Subkingdom Gymnomyxa (Lankester, 1878) Cavalier-Smith, 2002 see Kingdom Protozoa Goldfuss, 1818
     Infrakingdom Rhizaria Cavalier-Smith, 2002
       Phylum Apusozoa Cavalier-Smith, 1997 see Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
         Thecomonadea Cavalier-Smith, 1993
           1 Ancyromonadida Cavalier-Smith, 1998 see Order Planomonadida Cavalier-Smith, 2008
           2 Apusomonadida Karpov & Mylnikov, 1989
           3 Hemimastigida Foissner, Blatterer & Foissner, 1988