Earth:Buena Vista Formation
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| Buena Vista Formation Stratigraphic range: Late Permian-Early Triassic ~259.5–247.2 Ma | |
|---|---|
| Type | Geological formation |
| Underlies | Tacuarembó Formation |
| Overlies | Yaguarí Formation |
| Lithology | |
| Primary | Sandstone, mudstone |
| Other | Conglomerate |
| Location | |
| Coordinates | [ ⚑ ] : 32°18′S 54°06′W / 32.3°S 54.1°W |
| Paleocoordinates | [ ⚑ ] 40°12′S 15°42′W / 40.2°S 15.7°W |
| Region | Cerro Largo Department |
| Country |  Uruguay |
| Extent | Norte Basin |
  Buena Vista Formation (Uruguay) | |
The Buena Vista Formation is a Late Permian-Early Triassic geologic formation of the Cerro Largo Department in northeastern Uruguay. The fluvial sandstones and mudstones preserve temnospondyl and archosaur fossils.
Description
The Buena Vista Formation is characterized by reddish fine sandstone interbedded with lenticular clay layers and intraformational conglomerates deposited in a fluvial environment.[1]
Fossil content
The following fossils have been reported from the formation:[2][1]
- Temnospondyls
- Arachana nigra[3]
- Uruyiella liminea
- Dvinosauria indet.
- Mastodonsauridae indet.
See also
- List of fossiliferous stratigraphic units in Uruguay
References
- ↑ 1.0 1.1 Pineiro et al., 2003
- ↑ Buena Vista Formation at Fossilworks.org
- ↑ Graciela Piñeiro; Alejandro Ramos; Claudia Marsicano (2012). "A rhinesuchid-like temnospondyl from the Permo-Triassic of Uruguay". Comptes Rendus Palevol 11 (1): 65–78. doi:10.1016/j.crpv.2011.07.007. Bibcode: 2012CRPal..11...65P.
Bibliography
- Pineiro, G.; M. Verde; M. Ubilla, and J. Ferigolo. 2003. First Basal Synapsids (“Pelycosaurs”) from the Upper Permian - ?Lower Triassic of Uruguay. Journal of Paleontology 77. 389-392. Accessed 2020-06-15.
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