[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Actinommidae Haeckel, 1862
       Genus Plegmosphaera Haeckel, 1881
         1 Plegmosphaera coelopila Haeckel, 1887
         2 Plegmosphaera entodictyon Haeckel, 1887
         3 Plegmosphaera exodictyon Haeckel, 1887
         4 Plegmosphaera lepticali Renz, 1976
         5 Plegmosphaera oblonga Takahashi, 1991
         6 Plegmosphaera pachypila Haeckel, 1887
         7 Plegmosphaera pachyplegma Haeckel, 1887