Kingdom Protozoa Goldfuss, 1818 - protozoa Subkingdom Corticata Lankester, 1878 see Subkingdom Biciliata Infrakingdom Excavata T. Cavalier-Smith, 2002 see Supergroup Excavata Cavalier-Smith, 2002 Superphylum Discicristata Cavalier-Smith, 1998 Phylum Euglenozoa Cavalier-Smith, 1981 "kinetoplastids" see [unranked] Kinetoplastea Honigberg, 1963