| Donguz Formation | |
|---|---|
| Stratigraphic range: Anisian ~ | |
 Eryosuchus, an index fossil of the Donguz | |
| Type | Stratigraphic Formation |
| Underlies | Bukobay Svita[1] |
| Overlies | Petropavlovskaya Svita (Yarenskian Gorizont) |
| Lithology | |
| Primary | Sandstone |
| Other | Claystone, conglomerate |
| Location | |
| Coordinates | 51°30′N 55°12′E / 51.5°N 55.2°E |
| Approximate paleocoordinates | 33°36′N 43°12′E / 33.6°N 43.2°E |
| Region | Bashkortostan Orenburg Oblast |
| Country | Russia |
| Type section | |
| Named for | Donguz River |
  Donguz Formation (Russia) | |
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.[2][1][3]
It is a nature monument (особо охраняемых природных территорий (ООПТ)).[4]
- ^ a b Lucas, Spencer G (1 November 1998). "Global Triassic tetrapod biostratigraphy and biochronology". Palaeogeography, Palaeoclimatology, Palaeoecology. 143 (4): 347–384. Bibcode:1998PPP...143..347L. CiteSeerX 10.1.1.572.872. doi:10.1016/S0031-0182(98)00117-5.
- ^ Sennikov, A.G. (29 February 1996). "Evolution of the Permian and Triassic tetrapod communities of Eastern Europe". Palaeogeography, Palaeoclimatology, Palaeoecology. 120 (3–4): 331–351. Bibcode:1996PPP...120..331S. doi:10.1016/0031-0182(95)00041-0.
- ^ область&objregion=Оренбургский район
- ^ Uraloved.ru