Donguz Formation
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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]
Quick Facts Type, Underlies ...
Donguz Formation | |
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Stratigraphic range: Anisian ~247–242 Ma | |
![]() 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 | 51.5°N 55.2°E / 51.5; 55.2 |
Approximate paleocoordinates | 33.6°N 43.2°E / 33.6; 43.2 |
Region | Bashkortostan Orenburg Oblast |
Country | Russia |
Type section | |
Named for | Donguz River |
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It is a nature monument (особо охраняемых природных территорий (ООПТ)).[4]