[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Actinommidae Haeckel, 1862
       Genus †Thecosphaerella Haeckel, 1887
         1 †Thecosphaerella agdaraensis (Mamedov, 1969)
         2 †Thecosphaerella glebulenta Sanfilippo & Riedel, 1973
         3 †Thecosphaerella ptomatus Sanfilippo & Riedel, 1973
         4 †Thecosphaerella rotunda (Borisenko, 1960)