| Caiuá Formation | |
|---|---|
| Stratigraphic range: Barremian-Aptian ~130–120 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
| 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 / -22.0; -53.0 |
| Region | Paraná |
| Country |  Brazil Paraguay |
| Extent | Paraná Basin |
  Caiuá Formation (Brazil) | |
The Caiuá Formation is an Early Cretaceous geologic formation in Brazil and Paraguay. Fossil theropod tracks have been reported from the formation. 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.
See also
References
- Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- Brusatte et al., 2017, p.1469
Bibliography
- Brusatte, Stephen L.; Candeiro, Carolos R.A.; Simbras, Felipe M. (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, doi:10.1590/0001-3765201720160918, hdl:20.500.11820/d8f55493-9a6a-418e-888d-71333c78b957, PMID 28954171, retrieved 2019-02-21
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
- Geologic formations of Brazil
- Geologic formations of Paraguay
- Lower Cretaceous Series of South America
- Cretaceous Brazil
- Aptian Stage
- Barremian Stage
- Sandstone formations
- Ichnofossiliferous formations
- Fossiliferous stratigraphic units of South America
- Paleontology in Brazil
- Paraná Basin
- Geography of Paraná (state)