Shishugou Formation
The Shishugou Formation (simplified Chinese: 石树沟组; traditional Chinese: 石樹溝組; pinyin: Shíshùgōu Zǔ) is a geological formation in Xinjiang, China.
| Shishugou Formation | |
|---|---|
| Stratigraphic range: Callovian-Oxfordian ~ | |
| Type | Geological formation |
| Unit of | Qigu Group |
| Sub-units | Wucaiwan Member |
| Underlies | Kalaza Formation |
| Overlies | Xishanyao Formation |
| Thickness | 380 m (1,250 ft) |
| Lithology | |
| Primary | Mudstone |
| Other | Tuff, sandstone, conglomerate |
| Location | |
| Coordinates | 44.5°N 90.2°E |
| Approximate paleocoordinates | 42.5°N 100.5°E |
| Region | Xinjiang |
| Country | China |
| Extent | Northern Junggar Basin |
Shishugou Formation (Dzungaria) | |
Its strata date back to the Late Jurassic period. Dinosaur remains are among the fossils that have been recovered from the formation. The Shishugou Formation is considered one of the most phylogenetically and trophically diverse Middle to Late Jurassic theropod fauna.
The Wucaiwan Member, once considered a separate, underlying formation, is now considered the lowest unit of the Shishugou Formation.
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