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Jiufotang Formation

The Jiufotang Formation (Chinese: 九佛堂组; pinyin: jiǔfótáng zǔ) is an Early Cretaceous geological formation in Chaoyang, Liaoning which has yielded fossils of feathered dinosaurs, primitive birds, pterosaurs, and other organisms (see Jehol Biota). It is a member of the Jehol group. The exact age of the Jiufotang has been debated for years, with estimates ranging from the Late Jurassic to the Early Cretaceous. New uranium-lead dates reveal the formation is deposited in the Aptian stage of the Early Cretaceous.[2] Fossils of Microraptor and Jeholornis are from the Jiufotang.[3]

Fossil content

Choristoderans

Fish

Mammaliamorphs

Several mammaliamorph specimens have been found from the Jiufotang, but only a few have been formally described and named.

Ornithischians

Pterosaurs

Saurischians

A large titanosaur is present in the formation.[18]

Enantiornithines

Euornithines

Non-ornithothoracean theropods

Crustaceans

Plants


See also

References

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Further reading