[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838 Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847 Family Plagiacanthidae Hertwig, 1879 Genus Pseudodictyophimus Petrushevskaya, 1971 Pseudodictyophimus gracilipes (Bailey, 1856) Pseudodictyophimus gracilipes tetracanthus (Popofsky, 1913)