| Chota Formation | |
|---|---|
| Stratigraphic range: Early Campanian-Late Eocene ~ | |
| Type | Geological formation |
| Sub-units | Esperanza Mb. Rentema Mb. Fundo El Triunfo Mb. |
| Underlies | Cajaruro Formation |
| Overlies | Celendín Formation |
| Thickness | 320 m (1,050 ft) |
| Lithology | |
| Primary | Shale, sandstone |
| Other | Gypsum |
| Location | |
| Coordinates | 5°41′41″S 78°30′41″W / 5.69472°S 78.51139°W |
| Approximate paleocoordinates | 7°30′S 60°36′W / 7.5°S 60.6°W |
| Region | Cajamarca |
| Country | Peru |
| Extent | Bagua Basin |
| Type section | |
| Named for | Chota |
| Named by | Broggi |
| Location | Esperanza, Cajamarca |
| Year defined | 1942 |
  Chota Formation (Peru) | |
The Chota Formation is an Early Campanian to Late Eocene geologic formation of the Cajamarca and western Amazonas Region in northern Peru. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus ("Baguasaurus").[1] The formation was formerly named Bagua Formation.[2]