Donguz Formation
The Donguz Formation, Donguz Svita, or Donguz Rocks (Russian: Донгузские скалы) is a Middle Triassic geological formation that crops out on the right bank of Donguz River in Orenburg Oblast, Russia, across the settlement of Pervomaisky. The formation is equivalent to a biostratigraphic unit, the Donguz Gorizont. It is famous for its rich collection of the fossils of Middle Triassic tetrapods.
| Donguz Formation | |
|---|---|
| Stratigraphic range: Anisian ~ | |
Eryosuchus, an index fossil of the Donguz | |
| Type | Stratigraphic Formation |
| Underlies | Bukobay Svita |
| Overlies | Petropavlovskaya Svita (Yarenskian Gorizont) |
| Lithology | |
| Primary | Sandstone |
| Other | Claystone, conglomerate |
| Location | |
| Coordinates | 51.5°N 55.2°E |
| Approximate paleocoordinates | 33.6°N 43.2°E |
| Region | Bashkortostan Orenburg Oblast |
| Country | Russia |
| Type section | |
| Named for | Donguz River |
Donguz Formation (Russia) | |
It is a nature monument (особо охраняемых природных территорий (ООПТ)).
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