Kingdom Protozoa Goldfuss, 1818 - protozoa
   Subkingdom Gymnomyxa (Lankester, 1878) Cavalier-Smith, 2002 see Kingdom Protozoa Goldfuss, 1818
     Infrakingdom Rhizaria Cavalier-Smith, 2002
       Phylum Cercozoa Cavalier-Smith, 1998
         Subphylum Endomyxa T. Cavalier-Smith, 2002
           Class Ascetosporea T. Cavalier-Smith, 2002
             Order Haplosporida M. Caullery & F. Mesnil, 1899