Zuoyun Formation
| Zuoyun Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Underlies | Zhumapu Formation |
| Lithology | |
| Primary | Conglomerate, mudstone |
| Location | |
| Coordinates | 40°00′N 112°42′E / 40.0°N 112.7°E |
| Approximate paleocoordinates | 42°24′N 104°06′E / 42.4°N 104.1°E |
| Region | Shanxi Province |
| Country |  China |
  Zuoyun Formation (China)  Zuoyun Formation (Shanxi) | |
The Zuoyun Formation is an Early Cretaceous (estimated Albian)[1] geologic formation in Shanxi Province, China.[2] Dinosaur fossils attributable to the genus level are known from this formation.[1] During the Early Cretaceous, the Zuoyun area was generally dominated by an arid subtropical environment. There was irregular alternation of arid and humid climate, during which catastrophic flooding resulted in thick proluvial fan conglomerate-mudstone deposits.[3]
Dinosaurs
[edit]Remains of the following dinosaurs have been found in the formation:
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Dinosaurs
[edit]| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|---|---|---|---|---|---|---|
| Yanbeilong[1] | Y. ultimus | Sacrum, pelvic girdle, dorsal vertebrae, and one caudal vertebra | A stegosaurian |  |
See also
[edit]References
[edit]- ^ a b c Jia, Lei; Li, Ning; Dong, Liyang; Shi, Jianru; Kang, Zhishuai; Wang, Suozhu; Xu, Shichao; You, Hailu (2024-01-31). "A new stegosaur from the late Early Cretaceous of Zuoyun, Shanxi Province, China". Historical Biology: 1–10. doi:10.1080/08912963.2024.2308214. ISSN 0891-2963.
- ^ Yu,J.-X. (1986) The sporo-pollen assemblage from the Zuoyun Formation in Northwestern Shanxi and paleoclimate. Geological Review (Dizhi Lunping) Vol. 32:3, pg. 217- 224
- ^ 董黎阳, 伊剑; DONG Liyang, YI Jian (2018-03-24). "山西左云地区下白垩统左云组沉积相及其古气候意义". 地质论评 (in Chinese). 64 (2): 392–404. ISSN 0371-5736.