Subclass Radiolaria Müller, 1858 see Phylum Actinopoda Calkins, 1902
Count: -
   Order Polycystina Ehrenberg, 1838 see Class Polycystina Ehrenberg, 1838
  Count: -
     Suborder Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
    Count: 7f36g51s4ss
       Family Litheliidae Haeckel, 1862
      Count: 5g6s
         Genus Lithelius Haeckel, 1860
        Count: 2s
           1 Lithelius minor Jørgensen, 1900
          Count: -
           2 Lithelius nautiloides Popofsky, 1908
          Count: -