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 †Pylentonemoidea Deflandre, 1963
           Family †Pylentonemidae Deflandre, 1963
             Subfamily †Pylentoneminae Deflandre, 1963
               Genus †Pylentonema Deflandre, 1963