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
       1 Family Collosphaeridae Müller, 1858
      Count: -
       2 Family Actinommidae Haeckel, 1862
      Count: 7g12s2ss
       3 Family Sponguridae Haeckel, 1862
      Count: 4g5s
       4 Family Phacodiscidae Haeckel, 1881 see Subfamily Coccodiscinae Haeckel, 1862
      Count: -
       5 Family Spongodiscidae Haeckel, 1862
      Count: -
       6 Family Pyloniidae Haeckel, 1881
      Count: 4g3s
       7 Family Litheliidae Haeckel, 1862
      Count: 5g6s