[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838 Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847 Family Plagiacanthidae Hertwig, 1879 Genus Neosemantis Popofsky, 1913 †Neosemantis bjoerklundi Goll, 1979 †Neosemantis bjoerklundi mimicus Goll, 1979