Donguz Formation
The Donguz Formation, Donguz Svita, or Donguz Rocks 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.
It is a nature monument.
Fossil content
The following fossils have been found in the Donguz Formation:- Temnospondyls
- * Eryosuchus antiquus, Ochev
- * E. garjainovi, Ochev
- * E. tverdochlebovi, Ochev
- * Bukobaja? sp.
- * Plagiorophus danilovi
- * Plagioscutum ochevi, Shishkin
- * Plagiosternum paraboliceps
- Thecodonts
- * Jushatyria vjushkovi
- Procolophonid
- * Kapes serotinus, Novikov
- Proterosuchids
- * Sarmatosuchus ochevi, Sennikov
- Erythrosuchids
- * Uralosaurus magnus,
- Rauisuchidae
- * Dongusia colorata, Huene
- * Vjushkovisaurus berdjanensis, Ochev
- Euparkeriidae
- * Dorosuchus neoetus, Sennikov
- Dicynodonts
- * Kannemeyeria spp.
- Shansiodon gracile
- Therocephalians
- * Dongusaurus schepetovi, Vyushkov
- * Nothogomphodon danilovi, Tatarinov
- Diademodontids
- * Scalenodon boreus, Tatarinov
- Traversodontids
- * Antecosuchus ochevi, Tatarinov
- Therapsids
- * Calleonasus furvus
- * Cristonasus koltaeviensi
- * Elatosaurus facetus
- * Nasoplanites danilovi
- * Parvobestiola bashkiriensis
- * Rabidosaurus cristatus
- * Rhadiodromus klimovi
- Fish
- * Ceratodus bucobaensis, C. recticristatus
- Archosaurs
- * Dongusuchus efremovi, Sennikov