Suborder Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875 Family Spongodiscidae Haeckel, 1862 Genus Amphirhopalum Haeckel, 1881 1 Amphirhopalum ypsilon Haeckel, 1887 2 Amphirhopalum straussii (Haeckel, 1887)