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Chaoyangsaurus youngi Zhao et al. 1999 (ornithischian)

Reptilia - Neornithischia - Chaoyangsauridae

PaleoDB taxon number: 55580

Alternative combination: Chaoyangosaurus youngi

Invalid subtaxa: Chaoyangosaurus liaosiensis Zhao and Cheng 1983 [replaced name] (no. 65704), Chaoyoungosaurus liaosiensis Zhao and Cheng 1983 [replaced name] (no. 313248)

Full reference: X. Zhao, Z. Cheng, and X. Xu. 1999. The earliest ceratopsian from the Tuchengzi Formation of Liaoning, China. Journal of Vertebrate Paleontology 19(4):681-697

Belongs to Chaoyangsaurus according to R. J. Butler et al. 2008

Sister taxa: none

Type specimens:

  • Chaoyangsaurus youngi: IGCAGS V371, a partial skeleton
  • Chaoyangosaurus liaosiensis: IGCAGS V371. Its type locality is Ershijiazi, Chaoyang, which is in a Tithonian/Valanginian fluvial mudstone in the Tuchengzi Formation of China.

Ecology: ground dwelling herbivore

Average measurements (in mm): skull length 140.0