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| Bayan Mandahu Formation | |
|---|---|
| Stratigraphic range: Campanian, | |
 | |
| Type | Geological formation |
| Unit of | Gobi Desert |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Coordinates | 41.75N 106.75E |
| Region | Inner Mongolia |
| Country |  China |
| Type section | |
| Named for | Bayan Mandahu, Urad Rear Banner, Inner Mongolia |
The Bayan Mandahu Formation (also known as Wulansuhai Formation or Wuliangsuhai Formation) is a geological unit of "redbeds" located near the village of Bayan Mandahu in Inner Mongolia, China, in the Gobi Desert. It dates from the late Cretaceous Period. Laid down in the Campanian, it is dated somewhat uncertainly to between 75 and 71 mya (million years ago).[1]
- ^ Godefroit, Pascal; Currie, Philip J.; Li Hong; Shang Chang Yong; Dong Zhi-ming (2008). "A new species of Velociraptor (Dinosauria: Dromaeosauridae) from the Upper Cretaceous of northern China". Journal of Vertebrate Paleontology. 28 (2): 432–438. doi:10.1671/0272-4634(2008)28[432:ANSOVD]2.0.CO;2.