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 †Vallupinae Pessagno & MacLeod, 1987
               Genus †Mesovallupus Pessagno & MacLeod, 1987