Dushihin Formation
| Dushihin Formation | |
|---|---|
| Stratigraphic range: Aptian | |
| Type | Geological formation |
| Lithology | |
| Primary | Claystone, conglomerate |
| Location | |
| Coordinates | 45°24′N 101°42′E / 45.4°N 101.7°E |
| Approximate paleocoordinates | 46°30′N 101°42′E / 46.5°N 101.7°E |
| Region | Övörkhangai Province |
| Country |  Mongolia |
  Dushihin Formation (Mongolia) | |
The Dushihin Formation is an Early Cretaceous (Aptian) geologic formation in the Övörkhangai Province of Mongolia.[1] The formation preserves fossils of Psittacosaurus mongoliensis and fossil eggs described as Trachoolithus faticanus.
Description
[edit]The formation comprises concretionary, calcareous claystones and concretionary, brown, gray, green, blue, calcareous claystones with large flattened lime concretions. Within 3 metres (9.8 ft) in the formation is a lens of lighter grayish-brown clay with green and blue spots and small lime concretions. In the lens is also an inclusion of blue, pale purple-spotted aleurite. The depositional environment has been interpreted as lacustrine.[2]
Fossil content
[edit]The following fossils were reported from the lacustrine claystones and conglomerates of the formation:[1]
See also
[edit]References
[edit]- ^ a b Dushihin Formation in the Paleobiology Database
- ^ Builjasutuin-Khuduk in the Paleobiology Database
- ^ Shuvalov, 1975
- ^ a b c Kurzanov & Mikhailov, 1989
- ^ Mikhailov, 2000
- ^ a b Mikhailov et al., 1994
Bibliography
[edit]- Mikhailov, K.E (2000), Eggs and eggshells of dinosaurs and birds from the Cretaceous of Mongolia. In M. J. Benton, M. A. Shishkin, D. M. Unwin, & E N. Kurichkin, The Age of Dinosaurs in Russia and Mongolia, pp. 560–572
- Mikhailov, K.; Sabath, K.; Kurzanov, S. (1994), Eggs and nests from the Cretaceous of Mongolia. In K. Carpenter, K. F. Hirsch, and J. R. Horner (eds.), Dinosaur Eggs and Babies, Cambridge University Press, Cambridge, pp. 88–115
- Kurzanov, S.M.; Mikhailov, K.E. (1989), Dinosaur eggshells from the Lower Cretaceous of Mongolia, D. D. Gillette and M. G. Lockley (eds.), Dinosaur Tracks and Traces. Cambridge University Press, Cambridge, pp. 109–113
- Shuvalov, V.F (1975), "Novoe Mestonakhozhdenie rannemelovykh dinozavrov Buylyasutuin-Khuduk - A new locality of Early Cretaceous dinosaurs, Buylyasutuin-Khuduk - in N. Kramarenko, B. Luwsandansan, Yu. Voronin, R. Barsbold, A. Rozhdestvensky (eds.), Iskopaemaya Fauna I Flora Mongolii [Fossil Flora and Fauna of Mongolia]", Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya, Trudy - the Joint Soviet-Mongolian Paleontological Expedition, Transactions, 2: 210–213