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 Sponguridae Haeckel, 1862 Genus Spongurus Haeckel, 1860 Spongurus pylomaticus Riedel, 1958