[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847
     Family Theoperidae Haeckel, 1881
       Genus †Calocycloma Haeckel, 1887
         1 †Calocycloma ampulla (Ehrenberg, 1854)
         2 †Calocycloma castum (Haeckel, 1887)