Ulansuhai Formation
Template:Short description Script error: No such module "Infobox".Script error: No such module "check for unknown parameters". The Ulansuhai Formation (Template:Zh) is a geological formation in Inner Mongolia, north China. Dinosaur remains are among the fossils that have been recovered from the formation.[1]
The Ulansuhai Formation has traditionally been considered to date to the Aptian-Albian stages of the Lower Cretaceous, due to similarities between the Ulansuhai fauna and known Aptian formations.[1] However, radiometric dating done on underlying formations has shown this to be incorrect. Due to the age of underlying rocks, the Ulansuhai Formation cannot be older than the Turonian stage of the Late Cretaceous, about 92 Ma.[2][3]
Fossil content
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Dinosaurs
The carcharodontosaurid Shaochilong and ankylosaurid Gobisaurus were initially reported from this formation, but actually derive from the Miaogou Formation, which has outcrops nearby.[4]
| Dinosaurs | ||||
|---|---|---|---|---|
| Taxa | Presence | Description | Images | |
| A theropod of uncertain affinities,[3] known from a fragmentary postcranial skeleton.[5] | ||||
| Sinocephale bexelli[6] | A pachycephalosaurid, known from now lost skull fragments. Formerly Troodon bexelli. | |||
| Sinornithomimus dongi[7][1] | An ornithomimid. "[Fourteen] skeletons, juvenile to adult."[8] | |||
| Iguanodontia indet.[1] | ||||
Testudines
| Taxa | Presence | Description | Images |
|---|---|---|---|
| Kuhnemys maortuensis[9] | A pantrionychid turtle |
Ostracods
| Taxa | Presence | Description | Image |
|---|---|---|---|
| cf. Cypridea[7] | A cyprideid |
See also
References
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- ↑ a b c d e Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 563-570. Template:ISBN.
- ↑ Kobayashi, Y., and Lu, J.-C. (2003). "A new ornithomimid dinosaurian with gregarious habits from the Late Cretaceous of China." Acta Palaeontol. Pol., 48: 235–259.
- ↑ a b Benson, R.B.J. and Xu, X. (2008). "The anatomy and systematic position of the theropod dinosaur Chilantaisaurus tashuikouensis Hu, 1964 from the Early Cretaceous of Alanshan, People’s Republic of China." Geol. Mag., 145: 778–789. Script error: No such module "CS1 identifiers".
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- ↑ "Table 4.1," in Weishampel, et al. (2004). Page 73.
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- ↑ a b Script error: No such module "Citation/CS1".
- ↑ "Table 5.1," in Weishampel, et al. (2004). Page 138.
- ↑ S.-Y. Hu. 1964. [Carnosaurian remains from Alashan, Inner Mongolia]. Vertebrata PalAsiatica. 8(1):42-63
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