Phylum Radiolaria Müller, 1858
see Subphylum Radiozoa Cavalier-Smith, 1987
Superclass Polycystina Ehrenberg, 1838
see Superclass Polycystinia Ehrenberg, 1838
Class Sphaerellaria Haeckel, 1881
Order Sphaerellata Haeckel, 1887
Family †Parvivaccidae Pessagno & Yang, 1989
Subfamily †Heleninae Hull, 1997
Genus †Helena Hull, 1997, nom. illeg.