[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Spongodiscidae Haeckel, 1862
       Genus Stylodictya Ehrenberg, 1847
         01 Stylodictya aculeata Jørgensen, 1905
         02 †Stylodictya gracilis Ehrenberg, 1854
         03 †Stylodictya hastata Ehrenberg, 1873
         04 †Stylodictya inaequalispina Clark, 1942
         05 Stylodictya multispina Haeckel, 1860
         06 †Stylodictya ocellata Ehrenberg, 1875
         07 †Stylodictya orbiculata (Haeckel, 1862)
         08 †Stylodictya rosella Petrushevskaya, 1972
         09 †Stylodictya stellata Bailey, 1856
         10 †Stylodictya tainemplekta Caulet, 1991
         11 †Stylodictya targaeformis (Clark & Campbell, 1942)
         12 Stylodictya tenuispina Jørgensen, 1905