Phylum Amoebozoa Lühe, 1913
   Subphylum Protamoebae Cavalier-Smith, 2004 see Subphylum Lobosa Carpenter, 1861
     Class Lobosea (Carpenter, 1861) Cavalier-Smith, 1993 see Subphylum Lobosa Carpenter, 1861
       Order Euamoebida Lepşi, 1960
         Superfamily Amoeboidea Ehrenberg, 1838 see Order Tubulinida Smirnov et al., 2005
           Family Amoebidae Ehrenberg, 1838
             Genus Chaos Linnaeus, 1767
               1 Chaos nobile (Penard, 1902)
               2 Chaos carolinense (Wilson, 1900)