Overlies Xishanyao Formation Underlies Tugulu Group | Sub-units Wucaiwan Member | |
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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.
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Its strata date back to the Late Jurassic period. Dinosaur remains are among the fossils that have been recovered from the formation. (see Junggar Basin dinosaur trap). The Shishugou Formation is considered one of the most phylogenetically and trophically diverse Middle to Late Jurassic theropod fauna.
The Wucaiwan Formation, once considered a separate, underlying formation, is now considered the lowest unit of the Shishugou Formation.
Fauna
The Shishugou Formation dinosaur traps are a source of fauna fossils.
Ornithischians
Undescribed stegosaur is present in the Wucaiwan member. Undescribed ornithopod is present in the Wucaiwan member. Undescribed ankylosaurs present in both upper Shishugou and Wucaiwan members.
Theropods
Undescribed ornithomimosaur. Indeterminate tetanuran remains.