Ukureyskaya Formation
The Ukureyskaya Formation, also referred to as the Ukurey Formation is a geological formation 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]
| 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 | |
| Country |  |
| Extent | Zabaykalsky Krai |
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)". Transbaikal State University Journal (in Russian). 23 (6): 52–62. doi:10.21209/2227-9245-2017-23-6-52-62. ISSN 2227-9245.
- "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.; Gerdes, Axel; Yans, Johan; Godefroit, Pascal (2019-02-01). "The rise of feathered dinosaurs: Kulindadromeus zabaikalicus , the oldest dinosaur with 'feather-like' structures". PeerJ. 7: e6239. doi:10.7717/peerj.6239. ISSN 2167-8359. PMC 6361000. PMID 30723614.
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