ammonites
Changhsingoceras meishanense Chao and Liang 1965 (ammonite)

Cephalopoda - Goniatitida - Cyclolobidae

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

Sister taxa: Changhsingoceras sichuanense, Changhsingoceras tenuicostatum

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell width 32.8, shell diameter 87.0