[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Actinommidae Haeckel, 1862
       Genus Druppatractus Haeckel, 1887
         1 †Druppatractus hastatus Blueford, 1982
         2 Druppatractus irregularis Popofsky, 1912
         3 Druppatractus pyriformis (Bailey, 1856)
         4 Druppatractus variabilis Dumitrica, 1973