Kingdom Protozoa Goldfuss, 1818 - protozoa Subkingdom Gymnomyxa (Lankester, 1878) Cavalier-Smith, 2002 see Kingdom Protozoa Goldfuss, 1818 Infrakingdom Sarcomastigota Cavalier-Smith, 1983 see Subkingdom Sarcomastigota Cavalier-Smith, 1983 Phylum Choanozoa Cavalier-Smith, 1981 Class Corallochytrea Cavalier-Smith, 1995 see Order Corallochytrida Cavalier-Smith, 1995