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Prototoceras pachygyrum Zhao et al. 1978 (ceratite)

Cephalopoda - Ammonoidea - Araxoceratidae

PaleoDB taxon number: 207770

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 Prototoceras according to J. K. Zhao et al. 1978

Sister taxa: Prototoceras anfuense, Prototoceras complanatum, Prototoceras diluterotalum, Prototoceras fengchengense, Prototoceras hunanense, Prototoceras inflatum, Prototoceras japonicum, Prototoceras longilobatum, Prototoceras multidenticulatum, Prototoceras plicatum, Prototoceras pulchriforme, Prototoceras simplex, Prototoceras venustum, Prototoceras xiangulingense

Type specimen: NIGP 34286. Its type locality is Beihuashan, Anfu County, which is in a Wuchiapingian marine siliciclastic in the Loping Formation of China.

Ecology: nektonic carnivore

Average measurements (in mm): shell width 13.3, shell diameter 19.9