[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Spongodiscidae Haeckel, 1862
       Genus Spongurus Haeckel, 1860
         1 †Spongurus (?) irregularis Nishimura, 1992
         2 †Spongurus bilobatus Clark & Campbell, 1942
         3 †Spongurus cauleti Goll & Bjørklund, 1989
         4 Spongurus cylindricus Haeckel, 1860
         5 Spongurus pylomaticus Riedel, 1958
         6 †Spongurus sp. cf. elliptica (Ehrenberg, 1872)
         7 †Spongurus spatulaeformis Clark, 1942