Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Nassellaria Ehrenberg, 1847
       Order Cyrtidinata Haeckel, 1862
         Superfamily Acropyramidoidea Haeckel, 1881
           Family †Bulbocyrtiidae Kozur & Mostler, 1981
             1 Genus †Bulbocyrtium Kozur & Mostler, 1981
             2 Genus †Quasipetasus Blome, 1984
             3 Genus †Pessagnocyrtium Kozur & Mostler, 1981