Shengjinkou Formation
| Shengjinkou Formation | |
|---|---|
| Stratigraphic range: Early Cretaceous, | |
Two outcrops of the Shengjinkou Formation where the footprints of Pteraichnus wuerhoensis have been discovered. Photographed before 2021. | |
| Type | Geological formation |
| Unit of | Tugulu Group |
| Underlies | Lianmuqin Formation |
| Overlies | Kalaza Formation |
| Lithology | |
| Primary | Mudstone, siltstone |
| Location | |
| Coordinates | 46°00′N 85°48′E / 46.0°N 85.8°E |
| Approximate paleocoordinates | 45°00′N 81°54′E / 45.0°N 81.9°E |
| Region | Xinjiang Uygur Autonomous Region |
| Country | China |
| Extent | Junggar Basin |
| Type section | |
| Named by | Xia Gongjun |
| Year defined | 1956 |
The Shengjinkou Formation is an Early Cretaceous-aged Konservat-Lagerstätte composed of "interbedded red green and yellow variegated mudstones and siltstones" that is part of the larger Tugulu Group of China. Dinosaur and pterosaur remains have been recovered from the formation. The uppermost layers of the formation have been dated to the Valanginian age.