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 Sethophormididae Haeckel, 1881
1 Subfamily Sethophormidinae Haeckel, 1881
2 Subfamily Theopiliinae Haeckel, 1881
3 Subfamily †Rotaforminae Pessagno, 1970
4 Subfamily †Neosciadiocapsinae Pessagno, 1969
5 Subfamily Enneaphormidinae Petrushevskaya, 1981