Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Sphaerellaria Haeckel, 1881
       Order Hexalonchata Haeckel, 1881
         1 Family †Kungalariidae Dumitrica & Carter, 1999
         2 Family Hexalonchidae Haeckel, 1881