[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Spongodiscidae Haeckel, 1862
       Genus †Euchitonia Ehrenberg, 1860
         1 †Euchitonia elegans/furcata group