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
           Subfamily †Parvivaccinae Pessagno & Yang, 1989
             1 Genus †Dicroa Foreman, 1975
             2 Genus †Lanubus Pessagno & Yang, 1989
             3 Genus †Parvivacca Pessagno & Yang, 1989