[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Actinommidae Haeckel, 1862
       Genus Hexalonche Haeckel, 1881
         1 †Hexalonche ? nakasekoi Petrushevskaya & Kozlova, 1979
         2 Hexalonche amphisiphon Haeckel, 1887
         3 †Hexalonche esmarki Goll & Bjørklund, 1989
         4 Hexalonche heteracantha Popofsky, 1912
         5 †Hexalonche philosophica Haeckel, 1887