Dike - Scarritt Pocket: Deseadan, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Sparassodonta
- Borhyaenidae
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cf. Pharsophorus sp.
Ameghino 1897
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1 individual | |||||||||
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= Borhyaenidae sp.
Savage 1951
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Marshall et al. 1986 | |||||||||
| AMNH 29591, a new genus and species of borhyaenid | ||||||||||
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Mammalia
- Notoungulata
- Interatheriidae
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Argyrohyrax proavus
Ameghino 1897
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Vera et al. 2017 | |||||||||
| MLP 73-VII-1-11 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 44.7° South, 68.4° West (view map) | ||
| Paleocoordinates: | 45.9° South, 61.0° West | ||
| Basis of coordinate: | based on nearby landmark |
Time
| 10 m.y. bin: | Cenozoic 4-5 |
| Key time interval: | Deseadan |
| Age range of interval: | 28.9 - 20.9 m.y. ago |
Stratigraphy
| Formation: | Sarmiento | ||||
| Stratigraphy comments: Dike near the top of the intrusive walls, probably contemporaneous with the Crater Lake faunule
Eocene–Oligocene ‘Tobas del Sarmiento’, Sarmiento Group or Sarmiento Formation (Feruglio 1949; Andreis et al. 1975; Spalletti & Mazzoni 1977, 1979; Reguero & Escribano 1996). Regarding the age of Sarmiento formation, absolute dates are lacking for Cabeza Blanca, but Deseadan levels have been dated in other localities such as Salla, Bolivia (29.4–25.65 Ma), Moquegua, Peru (26.25 Ma), and Chubut, Argentina, Gran Barranca (29.4–24.2 Ma) and Scarritt Pocket (27.17 Ma) (Dunn et al. 2013 and references therein; Vucetich et al. 2014). |
Lithology and environment
| Primary lithology: | breccia |
| Lithology description: "Breccia-filled dike" | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Fragmentation: | extreme |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | AMNH |
Metadata
| Also known as: | Rinconada de los Lopez | ||
| Database number: | 49849 | ||
| Authorizer: | J. Alroy, P. Mannion, J. Zijlstra | Enterer: | J. Wertheim, J. Zijlstra, P. Mannion |
| Modifier: | M. Kouvari | Research group: | vertebrate |
| Created: | 2005-04-28 10:16:11 | Last modified: | 2020-09-19 08:50:15 |
| Access level: | the public | Released: | 2005-04-28 10:16:11 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 13361. | R.G. Chaffee. 1952. The Deseadan vertebrate fauna of the Scarritt Pocket, Patagonia. Bulletin of the American Museum of Natural History 98:505-562 [J. Alroy/J. Wertheim/J. Wertheim] |
Secondary references:
| 13081 | L. G. Marshall, R. L. Cifelli, R. E. Drake and G. H. Curtis. 1986. Vertebrate paleontology, geology, and geochronology of the Tapera de López and Scarritt Pocket, Chubut Province, Argentina. Journal of Paleontology 60(4):920-951 [D. Croft/D. Croft/D. Croft] | |
| 62562 | B. Vera, E. Cerdeño, and M. Reguero. 2017. The Interatheriinae from the Late Oligocene of Mendoza (Argentina), with comments on some Deseadan Interatheriidae. Historical Biology 29(5):607-626 [P. Mannion/P. Mannion/P. Mannion] |