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 Archipilioidea Haeckel, 1881 Family Cystidiidae Haeckel, 1883 Genus Cystidium Hertwig, 1879