Subclass Radiolaria Müller, 1858
see Phylum Actinopoda Calkins, 1902
Order Polycystina Ehrenberg, 1838
see Class Polycystina Ehrenberg, 1838
Suborder Spumellaria Ehrenberg, 1875
see Class Spumellaria Ehrenberg, 1875
Family Spongodiscidae Haeckel, 1862
Genus Stylodictya Ehrenberg, 1847
1 Stylodictya aculeata Jørgensen, 1905
2 Stylodictya validispina Jørgensen, 1905
see Stylodictya stellata Bailey, 1856