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 Cannobotryoidea Haeckel, 1881 Family Botryocyrtididae Petrushevskaya, 1981 Genus Bisphaerocephalus Popofsky, 1908