Xiguayuan Formation
The Xiguayuan Formation is an Early Cretaceous (Barremian) geologic formation in Hebei Province of China. Fossil ornithopod tracks have been reported from the formation.[1] It was deposited in a shallow lacustrine setting and is noted for its hyperpycnite facies.[2]
| Xiguayuan Formation | |
|---|---|
| Stratigraphic range: Barremian ~ | |
| Type | Geological formation |
| Underlies | Quaternary sediments |
| Overlies | Zhangjiakou Formation |
| Thickness | Up to 2,500 m (8,200 ft) |
| Lithology | |
| Primary | Conglomerate, sandstone, siltstone, mudstone |
| Other | Volcanic and pyroclastic sediments |
| Location | |
| Coordinates | 45.9°N 117.3°E |
| Approximate paleocoordinates | 48.8°N 117.4°E |
| Region | Hebei |
| Country |  China |
  Xiguayuan Formation (China)  Xiguayuan Formation (Hebei) | |
Fossil content
The formation has provided the following fossils:
- Ichnofossils
- Insects
- Gurvanomyia rohdendorfi
- Huaxiaplecia zhongguanensis
- Longhuaia orientalis
- Bivalves
- Weichangella caelata
See also
References
- Weishampel et al., 2004, pp.517-607
- Dou et al., 2020
Bibliography
- ; ; ; ; ; ; ; , and . 2020. Sedimentary characteristics of hyperpycnites in a shallow lacustrine environment: A case study from the Lower Cretaceous Xiguayuan Formation, Luanping Basin, Northeast China. Geological Journal 55. 3344–3360. doi:10.1002/gj.3599 ISSN 0072-1050
- , and . 1998. Lower Cretaceous vertebrate tracksites of East Asia. In S. G. Lucas, J. I. Kirkland, and J. W. Estep (eds.), Lower and Middle Cretaceous Terrestrial Ecosystems. New Mexico Museum of Natural History and Science Bulletin 14. 135–142.
- ; , and . 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
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