Jianguan Formation
Stratigraphic range: Barremian–Albian

PreЄ

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 Jianguan 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]

## See also

* List of dinosaur-bearing rock formations
* List of stratigraphic units with ornithischian tracks
* Ornithopod tracks

## Footnotes

1. ↑ 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): e0141059. doi:10.1371/journal.pone.0141059. ISSN 1932-6203. PMID 26492525. Bibcode: 2015PLoSO..1041059X.
2. ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.

## 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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