Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Sphaerellaria Haeckel, 1881
       Order Sphaerellata Haeckel, 1887
         Family †Parvivaccidae Pessagno & Yang, 1989
           1 Subfamily †Parvivaccinae Pessagno & Yang, 1989
           2 Subfamily †Heleninae Hull, 1997
           3 Subfamily †Leugeoninae Yang & Wang, 1990
           4 Subfamily †Acaeniotylinae Yang, 1993