[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847
     Family Plagiacanthidae Hertwig, 1879
       Genus Ceratocyrtis Bütschli, 1881
         01 †Ceratocyrtis amplus (Popofsky, 1908)
         02 †Ceratocyrtis broeggeri Goll & Bjørklund, 1989
         03 †Ceratocyrtis cucullaris (Ehrenberg, 1873)
         04 †Ceratocyrtis erosa (Cleve, 1900)
         05 Ceratocyrtis galeus (Cleve, 1899)
         06 Ceratocyrtis histricosa (Jørgensen, 1905)
         07 †Ceratocyrtis manumi Goll & Bjørklund, 1989
         08 †Ceratocyrtis mashae Bjørklund, 1976
         09 †Ceratocyrtis robustus Bjørklund, 1976
         10 Ceratocyrtis sinuosa Petrushevskaya, 1971
         11 †Ceratocyrtis stigi (Bjørklund, 1976)
         12 †Ceratocyrtis stoermeri Goll & Bjørklund, 1989