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 Eozoa Cavalier-Smith, 1997 see Infrakingdom Eozoa Cavalier-Smith, 1997
         Phylum Metamonada Grassé, 1952
           Subphylum Anaeromonada Cavalier-Smith, 1997
             Class Anaeromonadea Cavalier-Smith, 1997
               Order Oxymonadida Grassé, 1952 - oxymonads
                 1 Genus Pyrsonympha Leidy, 1877
                 2 Genus Dinenympha Leidy, 1877