Earth:Ukureyskaya Formation
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| Ukureyskaya Formation Stratigraphic range: Bajocian–Tithonian, 169–144 Ma | |
|---|---|
| Type | Geological formation |
| Sub-units | Lower, Middle and Upper subformations |
| Underlies | Utanskaya Formation |
| Overlies | Kulindinskaya Formation |
| Thickness | Several hundred metres |
| Lithology | |
| Primary | Sandstone, siltstone, tuffite |
| Other | Mudstone |
| Location | |
| Coordinates | [ ⚑ ] : 52°30′N 116°42′E / 52.5°N 116.7°E |
| Paleocoordinates | [ ⚑ ] 58°00′N 117°12′E / 58.0°N 117.2°E |
| Region | Zabaykalsky Krai |
| Country | Russia |
| Extent | Zabaykalsky Krai |
  Ukureyskaya Formation (Russia)  Ukureyskaya Formation (Zabaykalsky Krai) | |
The Ukureyskaya Formation, also referred to as the Ukurey Formation is a geological formation in Zabaykalsky Krai, part of the Russian Far East. It is made up of Middle Jurassic and Late Jurassic layers.[1] It covers large areas around Kulinda. The formation is where the type specimen fossils of Kulindadromeus zabaikalicus were found, alongside a single tooth from a medium-sized theropod of unknown affiliations and other indeterminate ornithschians.[2] Recent dating work suggest that the layers containing Kulindadromeus are Bathonian in age.[3]
References
- ↑ Sinitsa, S.; Reshetova, S.; Vilmova, E. (2017). "Hypostratotypes of Ukureyskaya Formation of Novoberezovka and Olov Depressions of Transbaikalia (Part 1. Hypostratotype-1 of Ukureyskaya Formation of Novoberezovka Depression)" (in ru). Transbaikal State University Journal 23 (6): 52–62. doi:10.21209/2227-9245-2017-23-6-52-62. ISSN 2227-9245. https://www.researchgate.net/publication/321188437.
- ↑ "The Kulinda fossil site", University of Bristol Palaeobiology Research Group. Retrieved 4 April 2015
- ↑ Cincotta, Aude; Pestchevitskaya, Ekaterina B.; Sinitsa, Sofia M.; Markevich, Valentina S.; Debaille, Vinciane; Reshetova, Svetlana A.; Mashchuk, Irina M.; Frolov, Andrei O. et al. (2019-02-01). "The rise of feathered dinosaurs: Kulindadromeus zabaikalicus , the oldest dinosaur with 'feather-like' structures" (in en). PeerJ 7: e6239. doi:10.7717/peerj.6239. ISSN 2167-8359. PMID 30723614.
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