[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847
     Family Theoperidae Haeckel, 1881
       Genus Cyrtolagena Haeckel, 1887
         1 †Cyrtolagena aglaolampa Takahashi, 1991
         2 Cyrtolagena laguncula Haeckel, 1887