Kingdom Protozoa Goldfuss, 1818 - protozoa
Count: [p] 13p;21c;9o;1f;46g;29s
   Subkingdom Gymnomyxa (Lankester, 1878) Cavalier-Smith, 2002 see Kingdom Protozoa Goldfuss, 1818
  Count: [p] 6p;18c;7o;1f;24g;15s
     Infrakingdom Sarcomastigota Cavalier-Smith, 1983 see Subkingdom Sarcomastigota Cavalier-Smith, 1983
    Count: [p] 2p;7c;1f;8g;7s
       Phylum Choanozoa Cavalier-Smith, 1981
      Count: -
         Class Cristidiscoidea Page, 1987 see Kingdom Nucleariae Tedersoo, Sánchez-Ramírez, Kõljalg, Bahram, Döring, Schigel, May, Ryberg & Abarenkov, 2018
        Count: -