[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Spongodiscidae Haeckel, 1862
       Genus †Amphicraspedum Haeckel, 1881
         1 †Amphicraspedum murrayanum Haeckel, 1887
         2 †Amphicraspedum prolixum Sanfilippo & Riedel, 1973