Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987 Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838 Class Stauraxonaria Afanasieva & Amon, 2005 Order Spongodiscata Haeckel, 1862 Family Coccodiscidae Haeckel, 1862 Subfamily Coccodiscinae Haeckel, 1862 Genus Heliosestrum Haeckel, 1881