Kingdom Protoctista Hogg, 1860
   Phylum Rhizopoda Dujardin, 1835 - rhizopods see Phylum Cercozoa Cavalier-Smith, 1998
     1 Class Lobosea (Carpenter, 1861) Cavalier-Smith, 1993 see Subphylum Lobosa Carpenter, 1861
     2 Class Filosea Leidy, 1879 - filose amebas