The Sunjiawan Formation (simplified Chinese: 孙家湾组; traditional Chinese: 孫家灣組; pinyin: Sūnjiāwān Zǔ) is a geological formation in Liaoning, China, with strata possibly dating back to the early Late Cretaceous, specifically the Cenomanian.[1] Dinosaur remains are among the fossils that have been recovered from the formation.[2] It forms part of the same geological sequence as the older and underlying Yixian Formation and Jiufotang Formation. It primarily consists of variegated conglomerates with rare intercalations of thin bedded sandstones, siltstones and mudstones.[3]
Dinosaurs
Remains of the following dinosaurs have been found in the formation:
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Color key
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Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.
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Dinosaurs
Ankylosaurs
Ornithopods
Sauropods
Theropods
| Theropods of the Sunjiawan Formation
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Species
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Location
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Stratigraphic position
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Material
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Notes
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Images
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| Tyrannosauroidea Indet.
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Indeterminate
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See also
References
- ^ Xi et al., 2018
- ^ Weishampel et al., 2004, pp.563-570
- ^ Wang et al., 2015
- ^ Victoria M. Arbour; Philip J. Currie (2015). "Systematics, phylogeny and palaeobiogeography of the ankylosaurid dinosaurs". Journal of Systematic Palaeontology. 14 (5): 385–444. doi:10.1080/14772019.2015.1059985. S2CID 214625754.
Bibliography
- Xi, D.; Wan, X.; Li, G.; Li, G. (2018), "Cretaceous integrative stratigraphy and timescale of China", Science China Earth Sciences, 61: 1–31, doi:10.1007/s11430-017-9262-y
- Wang, Yaqiong; Sha, Jingeng; Pan, Yanhong; Zhang, Xiaolin (2015), "Early Cretaceous nonmarine ostracod biostratigraphy ofwestern Liaoning area, NE China", Micropaleontology, 61 (1): 135–145, Bibcode:2015MiPal..61..135W, doi:10.47894/mpal.61.1.10, retrieved 2020-06-04
- Lu, J.; Ji, Q.; Gao, Y.; Li, Z. (2007), "A New Species of the Ankylosaurid Dinosaur Crichtonsaurus (Ankylosauridae: Ankylosauria) from the Cretaceous of Liaoning Province, China", Acta Geologica Sinica, 81 (6): 883–897, doi:10.1111/j.1755-6724.2004.tb00212.x, retrieved 2020-06-04
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
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- You, H.; Ji, Q.; Lamanna, M.C.; Li, J.; Li, Y. (2004), "A Titanosaurian Sauropod Dinosaur with Opisthocoelous Caudal Vertebrae from the Early Late Cretaceous of Liaoning Province, China", Acta Geologica Sinica, 78 (4): 907–911, doi:10.1111/j.1755-6724.2007.tb01010.x, retrieved 2020-06-04
Further reading
- H. You, Q. Ji, J. Li and Y. Li. 2003. A new hadrosauroid dinosaur from the mid-Cretaceous of Liaoning, China. Acta Geologica Sinica 77(2):148-154
- Z.-M. Dong. 2002. A new armored dinosaur (Ankylosauria) from Beipiao Basin, Liaoning Province, northeastern China. Vertebrata PalAsiatica 40(4):276-285