Rancho Grande : Danian, Argentina
collected by Ari Iglesias, Peter Wilf, Kirk Johnson
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Angiospermae
- Rosales
- Rhamnaceae
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Nothiantha grandensis
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Suessenia grandensis
Jud et al. 2017
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| see common names | |||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 44.8° South, 68.3° West (view map) | ||
| Paleocoordinates: | 47.3° South, 57.4° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Paleocene |
| Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
| Key time interval: | Danian | ||
| Age range of interval: | 66.00000 - 61.60000 m.y. ago | ||
| Age estimate: | 65.58 to 64.86 Ma (paleomagnetic) |
Stratigraphy
| Formation: | Salamanca |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | planar lamination,very fine,fine poorly lithified "siliciclastic" | ||
| Secondary lithology: | tabular,shelly/skeletal poorly lithified sandstone | ||
| Includes fossils? | Y | ||
| Lithology description: Comer, E.E., Slingerland, R.L., Krause, J.M., Iglesias, A., Clyde, W.C., Raigemborn, M.S. and Wilf, P., 2015. Sedimentary facies and depositional environments of diverse early Paleocene floras, north-central San Jorge Basin, Patagonia, Argentina. Palaios, 30(7), pp.553-573. | |||
| Environment: | marginal marine indet. | Tectonic setting: | passive margin |
| Geology comments: See Comer et al. (2015) for paleoenvironment and sedimentology, and Clyde etal. (2014) for dating and stratigraphy
Comer, E.E., Slingerland, R.L., Krause, J.M., Iglesias, A., Clyde, W.C., Raigemborn, M.S. and Wilf, P., 2015. Sedimentary facies and depositional environments of diverse early Paleocene floras, north-central San Jorge Basin, Patagonia, Argentina. Palaios, 30(7), pp.553-573. Clyde, W.C., Wilf, P., Iglesias, A., Slingerland, R.L., Barnum, T., Bijl, P.K., Bralower, T.J., Brinkhuis, H., Comer, E.E., Huber, B.T. and Ibañez-Mejia, M., 2014. New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for Cretaceous-Paleogene extinction recovery and land mammal age correlations. Bulletin, 126(3-4), pp.289-306. | |||
Taphonomy
| Modes of preservation: | body,adpression,trace,original calcite,coquina |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection excludes: | all macrofossils,ichnofossils |
| Collection methods: | selective quarrying,mechanical,survey of museum collection |
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | MEF |
| Collectors: | Ari Iglesias, Peter Wilf, Kirk Johnson |
Metadata
| Database number: | 194844 | ||
| Authorizer: | P. Wilf | Enterer: | E. Stiles |
| Modifier: | E. Stiles | Research group: | marine invertebrate,paleobotany |
| Created: | 2018-07-01 08:13:57 | Last modified: | 2018-11-19 16:02:28 |
| Access level: | authorizer only | Released: | 2018-10-01 08:13:57 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 66218. | N. A. Jud, M. A. Gandolfo, A. Iglesias and P. Wilf. 2017. Flowering after disaster: Early Danian buckthorn (Rhamnaceae) flowers and leaves from Patagonia. PLoS ONE 12(5) [P. Wilf/E. Stiles] |