[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Litheliidae Haeckel, 1862
       1 Genus Discopyle Haeckel, 1887
       2 Genus Larcopyle Dreyer, 1889
       3 Genus Lithelius Haeckel, 1860
       4 Genus †Lithocarpium Stöhr, 1880
       5 Genus Pylospira Haeckel, 1887