Back Jiufotang-Formation German Formation de Jiufotang French תצורת ג'יופוטאנג HE Jiufotangformasjonen NB Formação Jiufotang Portuguese Цзюфотан Ukrainian 九佛堂層 Chinese
| Jiufotang Formation | |
|---|---|
| Stratigraphic range: Aptian ~ | |
| Type | Geological formation |
| Unit of | Jehol Group |
| Sub-units | Shangheshou & Meileyingzi Beds |
| Underlies | Fuxin & Shahai Formations |
| Overlies | Yixian Formation |
| Lithology | |
| Primary | Mudstone |
| Other | Sandstone |
| Location | |
| Coordinates | 41°12′N 119°24′E / 41.2°N 119.4°E |
| Approximate paleocoordinates | 44°24′N 119°30′E / 44.4°N 119.5°E |
| Region | Liaoning |
| Country |  China |
| Type section | |
| Named for | Jiufotang, Pingfangzi, Liaoning |
| Named by | Ryuji Endo |
| Year defined | 1934[1] |
  Jiufotang Formation (China)  Jiufotang Formation (Liaoning) | |
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]
- ^ Endo, R. (1934). Geology and mineral resources of Manchuria 滿洲の地質及鑛産 (in Japanese). Tokyo: Sanseido.
- ^ Yu, Zhiqiang; Wang, Min; Li, Youjuan; Deng, Chenglong; He, Huaiyu (2021-12-01). "New geochronological constraints for the Lower Cretaceous Jiufotang Formation in Jianchang Basin, NE China, and their implications for the late Jehol Biota". Palaeogeography, Palaeoclimatology, Palaeoecology. 583: 110657. Bibcode:2021PPP...58310657Y. doi:10.1016/j.palaeo.2021.110657. ISSN 0031-0182. S2CID 239406222.
- ^ He, H.Y.; Wang, X.L.; Zhou, Z.H.; Wang, F.; Boven, A.; Shi, G.H.; Zhu, R.X. (2004). "Timing of the Jiufotang Formation (Jehol Group) in Liaoning, northeastern China, and its implications". Geophysical Research Letters. 31 (13): 1709. Bibcode:2004GeoRL..3112605H. doi:10.1029/2004GL019790.