Phylum Cercozoa Cavalier-Smith, 1998
   Order Cercomonadida Poche, 1913 - cercomonads
     Family Cercomonadidae Kent, 1880
       Genus Dimorpha Klebs, 1892, nom. illeg. see Genus Heliomorpha D. Bass et al., 2009
         Dimorpha alternans G.A. Klebs, 1892 see Cercomonas alternans (G.A. Klebs, 1892) A.P. Myl'nikov & S.A. Karpov, 2004