[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847
     Family Artostrobiidae Riedel, 1967
       Genus Spirocyrtis Haeckel, 1881
         1 †Spirocyrtis gyroscalaris Nigrini, 1977
         2 Spirocyrtis scalaris Haeckel, 1887
         3 Spirocyrtis subscalaris Nigrini, 1977
         4 †Spirocyrtis subtilis Petrushevskaya, 1972