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 Spongodiscata Haeckel, 1862
         Family †Relindellidae Kozur & Mostler, 1980
           1 Genus †Pentaspongodiscus Kozur & Mostler, 1979
           2 Genus †Relindella Kozur & Mostler, 1980
           3 Genus †Tetraspongodiscus Kozur & Mostler, 1979