[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847
     Family Plagiacanthidae Hertwig, 1879
       Genus †Botryopera Haeckel, 1887
         1 †Botryopera (?) pseudoantarctissa Petrushevskaya, 1979
         2 †Botryopera boldyrae (Petrushevskaya, 1971)
         3 †Botryopera chlamida Petrushevskaya, 1975
         4 †Botryopera oceanica (Ehrenberg, 1872)
         5 †Botryopera triloba (Ehrenberg, 1844)