Karabastau Formation
The Karabastau Formation (Kazakh: Qarabastaý svıtasy) is a geological formation and lagerstätte in the Karatau Mountains of southern Kazakhstan whose strata date to the Middle to Late Jurassic. It is an important locality for insect fossils that has been studied since the early 20th century, alongside the rarer remains of vertebrates, including pterosaurs, salamanders, lizards and crocodiles.
| Karabastau Formation | |
|---|---|
| Stratigraphic range: Middle Jurassic - Late Jurassic | |
Specimen of the salamander Karaurus sharovi | |
| Type | Geological formation |
| Area | Karatau Mountains |
| Thickness | 26 m (85 ft) exposed |
| Lithology | |
| Primary | Claystone dolomite, |
| Other | Sandstone, conglomerate |
| Location | |
| Region | Central Asia |
| Country | Kazakhstan |
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