The Caiuá Formation is an Early Cretaceous geologic formation in Brazil and Paraguay. Fossil theropod tracks have been reported from the formation.[1] The formation, the lowermost unit of the Bauru Group, was deposited in the Barremian and Aptian epochs of the Early Cretaceous, around 130 to 120 Ma. The formation is unconformably overlain by the Santo Anastácio Formation and the unconformity probably represents the start of the opening of the South Atlantic and the formation of the Santos Basin.[2]
| Caiuá Formation | |
|---|---|
| Stratigraphic range: Barremian-Aptian ~ | |
| Type | Geological formation |
| Unit of | Bauru Group |
| Underlies | Santo Anastácio Formation |
| Overlies | Serra Geral Formation |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Coordinates | 22°00′S 53°00′W / 22.0°S 53.0°W |
| Region | Paraná |
| Country |  Brazil Paraguay |
| Extent | Paraná Basin |
  Caiuá Formation (Brazil) | |
See also edit
References edit
Bibliography edit
- Brusatte, Stephen L.; Carolos R.A. Candeiro, and Felipe M. Simbras. 2017. The Last Dinosaurs of Brazil: The Bauru Group and its implications for the end of the Cretaceous mass extinction. Anais da Academia Brasileira de Ciências 89(3). 1465–1485. Accessed 2019-02-21.
- Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2