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 Percolozoa Cavalier-Smith, 1992 Class Percolatea Cavalier-Smith, 2003 Order Pseudociliatida Corliss & Lipscomb, 1982 1 Genus Stephanopogon G. Entz, 1884