| Cha-Kjeri Formation | |
|---|---|
|  Stratigraphic range: Eifelian  ~  | |
| Type | Geological formation | 
| Sub-units | Purple Sandstone member | 
| Lithology | |
| Primary | Sandstone | 
| Location | |
| Coordinates | 19°12′S64°54′W / 19.2°S 64.9°W | 
| Approximate paleocoordinates | 69°36′S85°48′W / 69.6°S 85.8°W | 
| Region | Chuquisaca Department | 
| Country | Bolivia | 
| Extent | Cordillera Oriental | 
The Cha-Kjeri Formation is an Eifelian geologic formation of central Bolivia. The formation comprises red sandstones deposited in a marine environment. [1]
The formation has provided fossils of Globithyris aff. diana .