Subclass Radiolaria Müller, 1858 see Phylum Actinopoda Calkins, 1902 Order Polycystina Ehrenberg, 1838 see Class Polycystina Ehrenberg, 1838 Suborder Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875 Family Pyloniidae Haeckel, 1881 Genus Tetrapyle Müller, 1858 Tetrapyle octacantha Müller, 1858