[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847
     Family Artostrobiidae Riedel, 1967
       Genus †Siphostichartus Nigrini, 1977
         1 †Siphostichartus corona (Haeckel, 1887)
         2 †Siphostichartus praecorona Nigrini, 1977