Fengjiahe Formation

Last updated
Fengjiahe Formation
Stratigraphic range: Pliensbachian
Type Geological formation
Underlies Zhanghe Formation
Overlies Shezi Formation
ThicknessUp to 1,500 m (4,900 ft)
Lithology
Primary Mudstone, siltstone
Other Sandstone
Location
Coordinates 24°42′N101°36′E / 24.7°N 101.6°E / 24.7; 101.6 Coordinates: 24°42′N101°36′E / 24.7°N 101.6°E / 24.7; 101.6
Approximate paleocoordinates 32°42′N99°48′E / 32.7°N 99.8°E / 32.7; 99.8
Region Yunnan
CountryFlag of the People's Republic of China.svg  China
Extent Yimen Basin
China edcp relief location map.jpg
Blue pog.svg
Fengjiahe Formation (China)
China Yunnan location map.svg
Blue pog.svg
Fengjiahe Formation (Yunnan)

The Fengjiahe Formation is a geological formation in China. It dates back to the Early Jurassic, most likely to the Pliensbachian. [1] The formation is up to 1500 metres thick and consists of "purple-red mudstone and argillaceous siltstone interbedded with gray-green and yellow-green quartz sandstone and feldspathic quartz sandstone" [2]

Contents

Fossil content

Theropod tracks geographically present in Yunnan, China. [3]

Vertebrates
GenusSpeciesLocationStratigraphic positionMaterialNotesImages

Shuangbaisaurus

S. anlongbaoensis

Shuangbai County

Lower part of formation

Partial skull with lower jaw

A crested basal theropod, probably a junior synonym of Sinosaurus.

Chinshakiangosaurus [3]

C. chunghoensis [3]

Geographically present in Yunnan, China. [3]

A basal sauropod.

Lufengosaurus [2] L. hueneiA massospondylid sauropodomorph.

Yimenosaurus [3]

Y. youngi [3]

Geographically present in Yunnan, China. [3]

"[Ten] partial skeletons, skull, adult." [4]

A plateosaurid sauropodomorph.
Yunnanosaurus [1] Y. youngiA sauropodiform sauropodomorph.
Yuxisaurus [5] Y. kopchicki Yuxi Prefecture, Yunnan, ChinaUpperPartial skeleton including a partial skull, cervical and dorsal vertebrae, scapulae, right humerus, left femur, and osteodermsA basal thyreophoran.

See also

Related Research Articles

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Shuangbaisaurus is genus of theropod dinosaur, possibly a junior synonym of Sinosaurus. It lived in the Early Jurassic of Yunnan Province, China, and is represented by a single species, S. anlongbaoensis, known from a partial skull. Like the theropods Dilophosaurus and Sinosaurus,Shuangbaisaurus bore a pair of thin, midline crests on its skull. Unusually, these crests extended backwards over the level of the eyes, which, along with the unusual orientation of the jugal bone, led the describers to name it as a new genus. However, Shuangbaisaurus also possesses a groove between its premaxilla and maxilla, a characteristic which has been used to characterize Sinosaurus as a genus. Among the two morphotypes present within the genus Sinosaurus, Shuangbaisaurus more closely resembles the morphotype that is variably treated as a distinct species, S. sinensis, in its relatively tall skull.

References

  1. 1 2 Ren, Xin-Xin; Su, Xing; Wang, Guo-Fu; You, Hai-Lu (2021-10-04). "Sedimentological evidence suggests an Early Jurassic age for Yunnanosaurus youngi (Dinosauria: Sauropodomorpha) in Yunnan Province of China". Historical Biology. 34 (9): 1827–1833. doi:10.1080/08912963.2021.1984445. ISSN   0891-2963. S2CID   244227159.
  2. 1 2 Xing, Lida; Rothschild, Bruce M.; Randolph-Quinney, Patrick S.; Wang, Yi; Parkinson, Alexander H.; Ran, Hao (December 2018). "Possible bite-induced abscess and osteomyelitis in Lufengosaurus (Dinosauria: sauropodomorph) from the Lower Jurassic of the Yimen Basin, China". Scientific Reports. 8 (1): 5045. doi:10.1038/s41598-018-23451-x. ISSN   2045-2322. PMC   5864883 . PMID   29568005.
  3. 1 2 3 4 5 6 7 Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Jurassic, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 534–535. ISBN   0-520-24209-2.
  4. "Table 12.1," in Weishampel, et al. (2004). Page 236.
  5. Yao, X.; Barrett, P. M.; Lei, Y.; Xu, X.; Bi, S. (2022-03-15). "A new early-branching armoured dinosaur from the Lower Jurassic of southwestern China". eLife . 11: e75248. doi:10.7554/eLife.75248. PMC   8929930 . PMID   35289749.