Domain Eucaryota
   Subdomain Chlorota Doweld (2001)
     Kingdom Euglenobiota Leedale ex Doweld (2001)
       Subkingdom Cercomonadobiotina Doweld, 2001
         Phylum Cercomonadozoa Karpov, 1990
           1 Class Apusomonadatea Doweld, 2001
           2 Class Thaumatomonadatea Mikrjukov, 2000
           3 Class Cercomonadatea Mikrjukov, 2000
           4 Class Dimorphiellatea Doweld, 2001 [monotypic]
           5 Class Clathrulinatea Kussakin & Drozdov, 1998