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
Subfamily †Neosciadiocapsinae Pessagno, 1969
1 Genus †Coniforma Pessagno, 1969
2 Genus †Ewingella Pessagno, 1969, nom. illeg.
see Genus Ewingium Pessagno, 1976
3 Genus †Ewingium Pessagno, 1976
4 Genus †Lipmanium Pessagno, 1969
5 Genus †Microsciadiocapsa Pessagno, 1969
6 Genus †Neosciadiocapsa Pessagno, 1969
7 Genus †Petasiforma Pessagno, 1969
8 Genus †Sciadiocapsa Squinabol, 1904
9 Genus †Scyphiforma Pessagno, 1969