Jiufotang

Jiufotang Formation

Jiufotang Formation

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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]

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Fossil content

Choristoderans

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Fish

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Mammaliamorphs

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

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Ornithischians

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Pterosaurs

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Saurischians

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

Enantiornithines

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Euornithines

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Non-ornithothoracean theropods

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Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
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Uncertain or tentative taxa are in small text; crossed out taxa are discredited.
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Crustaceans

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Plants

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See also

References

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