[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847
     Family Plagiacanthidae Hertwig, 1879
       Genus †Velicucullus Riedel & Campbell, 1952
         1 †Velicucullus altus Abelmann, 1990
         2 †Velicucullus magnificum (Clark & Campbell, 1942)
         3 †Velicucullus oddgurneri Bjørklund, 1976
         4 †Velicucullus palaeocenica Nishimura, 1992