Earth:Jiaguan Formation
From HandWiki
| Jiaguan Formation Stratigraphic range: Barremian–Albian | |
|---|---|
| Type | Geological formation |
| Underlies | Quaternary sediments |
| Overlies | Penglaizhen Formation |
| Thickness | Around 390 m at the Lotus Fortress locality |
| Lithology | |
| Primary | Sandstone, siltstone, mudstone, conglomerate |
| Location | |
| Region | Sichuan |
| Country | China |
The Jiaguan Formation is a Lower Cretaceous geologic formation in China. Its lithology is described as consisting of "alternating thick purple red sandstone layers and thin purple red mudstone and siltstone layers, and bottom layers of thick conglomerate".[1] Fossil ornithopod tracks have been reported from the formation.[1][2]
The known fossil localities include the Lotus Fortress, the type locality of Caririchnium lotus and Wupus agilis ichnotaxa.[1] One of the smallest known theropod trace fossil Minisauripus chuanzhuensis was first discovered from this formation.[3][4]
See also
- List of dinosaur-bearing rock formations
- List of stratigraphic units with ornithischian tracks
- Ornithopod tracks
- List of stratigraphic units with ornithischian tracks
Footnotes
- ↑ 1.0 1.1 1.2 Xing, Lida; Lockley, Martin G.; Marty, Daniel; Zhang, Jianping; Wang, Yan; Klein, Hendrik; McCrea, Richard T.; Buckley, Lisa G. et al. (22 October 2015). "An Ornithopod-Dominated Tracksite from the Lower Cretaceous Jiaguan Formation (Barremian–Albian) of Qijiang, South-Central China: New Discoveries, Ichnotaxonomy, Preservation and Palaeoecology" (in en). PLOS ONE 10 (10). doi:10.1371/journal.pone.0141059. ISSN 1932-6203. PMID 26492525. Bibcode: 2015PLoSO..1041059X.
- ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ↑ Zhen, S.; Li, J.; Chen, W.; Zhu, S. (1995). "Dinosaur and bird footprints from the Lower Cretaceous of Emei County, Sichuan". Memoirs of the Beijing Natural History Museum 54: 105-120.
- ↑ Lockley, Martin G.; Kim, J.-Y.; Kim, K.-S.; Kim, S.-H.; Matsukawa, M.; Rihui, L.; Jianjun, L.; Yang, S.-Y. (2008). "Minisauripus―the track of a diminutive dinosaur from the Cretaceous of China and South Korea: implications for stratigraphic correlation and theropod foot morphodynamics". Cretaceous Research 29 (1): 115-130. doi:10.1016/j.cretres.2007.04.003.
References
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
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