ammonites
Planodiscoceras involutum Zhao et al. 1978 (ceratite)

Cephalopoda - Ceratitida - Anderssonoceratidae

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

Belongs to Planodiscoceras according to J. K. Zhao et al. 1978

Sister taxa: Planodiscoceras gratiosum, Planodiscoceras longilobatum

Type specimen: NIGP 14889. Its type locality is Xinhang, Guangde County, which is in a Wuchiapingian marine siliciclastic in the Longtan Formation of China.

Ecology: nektonic carnivore

Average measurements (in mm): shell diameter 24.8