Class Lobosea (Carpenter, 1861) Cavalier-Smith, 1993 see Subphylum Lobosa Carpenter, 1861
   Subclass Gymnamoebia (Haeckel, 1862) Cavalier-Smith, 1993 see [unranked] Gymnamoebae
     Order Euamoebida Lepşi, 1960
       Family Amoebidae Ehrenberg, 1838
         Genus Polychaos Schaeffer, 1926
           1 Polychaos fasciculatum (Penard, 1902)
           2 Polychaos annulatum (Penard, 1902)
           3 Polychaos dubium (Schaeffer, 1916)
           4 Polychaos nitidubium Bovee, 1970