Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Spumellaria Ehrenberg, 1875
       Order Saturnalata Afanasieva & Amon, 2005
         Family Saturnalidaeᵀ Deflandre, 1953
           1 Subfamily †Heliosaturnalinae Kozur & Mostler, 1972
           2 Subfamily †Hexasaturnalinae Kozur & Mostler, 1983
           3 Subfamily Saturnalinae Deflandre, 1953
           4 Subfamily Axopruninae Dumitrica, 1983