Shishugou Formation | |
---|---|
Stratigraphic range: Callovian-Oxfordian ~ | |
Type | Geological formation |
Unit of | Qigu Group |
Sub-units | Wucaiwan Member |
Underlies | Kalaza Formation |
Overlies | Xishanyao Formation[1] |
Thickness | 380 m (1,250 ft) |
Lithology | |
Primary | Mudstone |
Other | Tuff, sandstone, conglomerate |
Location | |
Coordinates | 44°30′N 90°12′E / 44.5°N 90.2°E |
Approximate paleocoordinates | 42°30′N 100°30′E / 42.5°N 100.5°E |
Region | Xinjiang |
Country | China |
Extent | Northern Junggar Basin |
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.
Its strata date back to the Late Jurassic period. Dinosaur remains are among the fossils that have been recovered from the formation.[2] The Shishugou Formation is considered one of the most phylogenetically and trophically diverse Middle to Late Jurassic theropod fauna.[3]
The Wucaiwan Member, once considered a separate, underlying formation,[4] is now considered the lowest unit of the Shishugou Formation.
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