[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Spongodiscidae Haeckel, 1862
       Genus Spongaster Ehrenberg, 1860
         1 †Spongaster berminghami (Campbell & Clark, 1944)
         2 Spongaster pentas Riedel & Sanfilippo, 1970
         3 Spongaster tetras Ehrenberg, 1860