Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Nassellaria Ehrenberg, 1847
       Order †Pylomariata Afanasieva, 1999
         Superfamily †Cessipyloroidea Afanasieva, 1999
           Family †Cessipyloridae Afanasieva, 1999
             Subfamily †Caspiazinae Afanasieva, 2000
               Genus †Caspiaza Afanasjeva, 1986