Temporal range: Late Jurassic, 160 Ma
Chienkosaurus ulna.jpg
Ulna referred to Chienkosaurus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Clade: Tetanurae
Genus: Chienkosaurus
Young, 1942
  • Chienkosaurus ceratosauroides Young, 1942 (type)

Chienkosaurus ("Szechuan lizard") is a dubious genus of carnivorous theropod dinosaur from the Late Jurassic of China, Asia.

Discovery and species

The type species is Chienkosaurus ceratosauroides, named by Yang Zhongjian ("Chung Chien Young") in 1942 on the basis of IVPP V.237, which consists of four teeth. The species name means "Ceratosaurus-like" because Yang interpreted the teeth as being similar to Ceratosaurus.[1] Three of the teeth catalogued under IVPP V.237 were recognized by Dong et al. (1983) as non-theropod and instead belonging to the mesoeucrocodylian Hsisosuchus, effectively restricting the holotype to the theropod tooth .[2] Yang also referred to Chienkosaurus an ulna (IVPP V.193) and a caudal centrum (IVPP V.192). Holtz et al. (2004) designated Chienkosaurus as dubious in their chapter on basal Tetanurae, as did Wu et al. (2009).[3][4]


  1. ^ Young, 1942. Fossil vertebrates from Kuangyuan, N. Szechuan, China. Bulletin of the Geological Society of China. 22(3-4), 293-309.
  2. ^ Dong, Zhou and Zhang, 1983. Dinosaurs from the Jurassic of Sichuan. Palaeontologica Sinica. Whole Number 162, New Series C, 23, 136 pp.
  3. ^ T. R. Holtz, R. E. Molnar, and P. J. Currie. 2004. Basal Tetanurae. In D. B. Weishampel, P. Dodson, and H. Osmolska (eds.), The Dinosauria (second edition). University of California Press, Berkeley 71-110
  4. ^ X.-C. Wu, P. J. Currie, Z. Dong, S. Pan, and T. Wang. 2009. A new theropod dinosaur from the Middle Jurassic of Lufeng, Yunnan, China. Acta Geologica Sinica 83(1):9-24

External links

  • Szechuanosaurus campi in The Theropod Database