[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Spongodiscidae Haeckel, 1862
       Genus †Schizodiscus Dogiel, 1952, nom. illeg.
         †Schizodiscus favus (Ehrenberg, 1861)
           †Schizodiscus favus maxima (Popofsky, 1908)