Donguz Formation
| Donguz Formation | |
|---|---|
| Stratigraphic range: Anisian ~ | |
| Type | Stratigraphic Formation |
| Underlies | Bukobay Formation[1] |
| 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 or Donguz Rocks (Russian: Донгузские скалы) is stratigraphic formation that crops out on the right bank of Donguz River in Orenburg Oblast, Russia, across the settlement of Pervomaisky. 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]
Fossil content
The following fossils have been found in the Donguz Formation:[1]
- Temnospondyls
- Eryosuchus antiquus, Ochev
- E. garjainovi, Ochev
- E. tverdochlebovi, Ochev
- Bukobaja? sp.
- Plagiorophus danilovi
- Plagioscutum ochevi, Shishkin
- Plagiosternum paraboliceps (Konzhukova)
- Thecodonts
- Procolophonid
- Kapes serotinus, Novikov
- Proterosuchids
- Sarmatosuchus ochevi, Sennikov
- Erythrosuchids
- Uralosaurus magnus, (Ochev)
- Rauisuchidae
- Dongusia colorata, Huene
- Dongusuchus efremovi, Sennikov
- Vjushkovisaurus berdjanensis, Ochev
- Euparkeriidae
- Dorosuchus neoetus, Sennikov
- Dicynodonts
- Kannemeyeria spp.
- Shansiodon (Rhinodicynodon) gracile (Kalandadze)
- Therocephalians
- Dongusaurus schepetovi, Vyushkov
- Nothogomphodon danilovi, Tatarinov
- Diademodontids
- Scalenodon boreus, Tatarinov
- Traversodontids
- Antecosuchus ochevi, Tatarinov
- Therapsids
- Fish
References
- ^ a b c Lucas, Spencer G (1 November 1998). "Global Triassic tetrapod biostratigraphy and biochronology". Palaeogeography, Palaeoclimatology, Palaeoecology. 143 (4): 347–384. 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. doi:10.1016/0031-0182(95)00041-0.
- ^ область&objregion=Оренбургский район
- ^ Uraloved.ru