Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Stauraxonaria Afanasieva & Amon, 2005
       Order †Radiiformata Afanasieva & Amon, 2005
         Family †Polyfistulidae Amon, 1999 [monotypic]
           1 Genus †Polyfistula Nazarov & Ormiston, 1984