Phylum Radiolaria Müller, 1858
see Subphylum Radiozoa Cavalier-Smith, 1987
Superclass Polycystina Ehrenberg, 1838
see Superclass Polycystinia Ehrenberg, 1838
Class Sphaerellaria Haeckel, 1881
Order Entactiniata Kozur & Mostler, 1982
Family †Astroentactiniidae Nazarov & Ormiston, 1985
Subfamily †Helioentactiniinae Afanasieva, 1999 [monotypic]
1 Genus †Helioentactinia Nazarov, 1975, nom. dub.