[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Actinommidae Haeckel, 1862
       Genus †Stylosphaera Ehrenberg, 1847
         1 †Stylosphaera coronata coronata Ehrenberg, 1873
         2 †Stylosphaera coronata macrosphaera Nishimura, 1992
         3 †Stylosphaera coronata sabaca Sanfilippo & Riedel, 1973
         4 †Stylosphaera dixyphos (Ehrenberg, 1854)
         5 †Stylosphaera hexaxyphophora Clark & Campbell, 1942
         6 †Stylosphaera hispida Ehrenberg, 1854
         7 †Stylosphaera laevis Ehrenberg, 1873
         8 †Stylosphaera minor (Clark & Campbell, 1942)
         9 †Stylosphaera radiosa Ehrenberg, 1875