Barreirinha Formation
| Barreirinha Formation | |
|---|---|
| Stratigraphic range: late Frasnian ~ | |
 Late Devonian paleogeography (380 Ma) | |
| Type | Geological formation |
| Lithology | |
| Primary | Black shale |
| Other | Sandstone, pyrite |
| Location | |
| Coordinates | 4°06′S 58°00′W / 4.1°S 58.0°W |
| Approximate paleocoordinates | 64°18′S 36°24′W / 64.3°S 36.4°W |
| Region | Amazonas |
| Country |  Brazil |
| Extent | Amazon Basin |
| Type section | |
| Named for | Barreirinha |
  Barreirinha Formation (Brazil) | |
The Barreirinha Formation is a late Frasnian geologic formation of the Amazon Basin in the state of Amazonas of northern Brazil. The group comprises deep marine black shales and sandstones.[1]
Fossil content[edit]
The formation has provided conodont fossils of:[1][2]
References[edit]
- ^ a b Barreirinha Formation at Fossilworks.org
- ^ Cardoso, 2015
Bibliography[edit]
- Cardoso, C. N.; J. Sanz López; S. Blanco Ferrera; V. B. Lemos, and A. K. Scomazzon. 2015. Frasnian conodonts at high palaeolatitude (Amazonas Basin, north Brazil). Palaeogeography, Palaeoclimatology, Palaeoecology 418. 57–64. .