Ukureyskaya Formation

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]

Ukureyskaya Formation
Stratigraphic range:
TypeGeological formation
Sub-unitsLower, Middle and Upper subformations
UnderliesUtanskaya Formation
OverliesKulindinskaya Formation
ThicknessSeveral hundred metres
Lithology
PrimarySandstone, siltstone, tuffite
OtherMudstone
Location
Coordinates52.5°N 116.7°E / 52.5; 116.7
Approximate paleocoordinates58.0°N 117.2°E / 58.0; 117.2
RegionZabaykalsky Krai
CountryRussia
ExtentZabaykalsky Krai
Ukureyskaya Formation is located in Russia
Ukureyskaya Formation
Ukureyskaya Formation (Russia)
Ukureyskaya Formation is located in Zabaykalsky Krai
Ukureyskaya Formation
Ukureyskaya Formation (Zabaykalsky Krai)

References
  1. 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.
  2. "The Kulinda fossil site", University of Bristol Palaeobiology Research Group. Retrieved 4 April 2015
  3. 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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