Phylum Cercozoa Cavalier-Smith, 1998
Status: extant
   Subphylum Filosa T. Cavalier-Smith & E.E.-Y. Chao, 2003
  Status: extant
     Superclass Monadofilosa Cavalier-Smith, 1997 see Subphylum Monadofilosa Cavalier-Smith, 1997
    Status: extant
       Class Imbricatea T. Cavalier-Smith & E.E.-Y. Chao, 2003
      Status: extant
         Order Thaumatomonadida Shirkina, 1987
        Status: extant
           1 Genus Allas Sandon, 1927
          Status: extant
           2 Genus Thaumatomastix Lauterborn, 1899
          Status: extant