Suborder Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875 Family Spongodiscidae Haeckel, 1862 Genus Spongodiscus Ehrenberg, 1854 1 Spongodiscus resurgens Ehrenberg, 1854 2 Spongodiscus biconcavus Haeckel, 1887