†Pentagonoceras Zhao et al. 1978 (ceratite)
Cephalopoda - Ceratitida - Pleuronodoceratidae
Full reference: J. K. Zhao, X. L. Liang, and Z. G. Zheng. 1978. Late Permian cephalopods of south China. Palaeontologica Sinica, New Series B 154(12):1-194
Parent taxon: Pleuronodoceratidae according to D. Korn 2006
Sister taxa: Longmenshanoceras, Pleuronodoceras, Qianjiangoceras, Rotodiscoceras
Subtaxa: Pentagonoceras attenuatum, Pentagonoceras chaotianense, Pentagonoceras costatum, Pentagonoceras guangyuanense, Pentagonoceras guizhouense, Pentagonoceras spinosum
Ecology: nektonic carnivore