IGM-2996, Las Encinas Fm, Mexico - Vega et al. (1999): Early Paleocene, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Ostreida
- Ostreidae
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| see common names | |||||||
Geography
| Country: | Mexico | State/province: | Nuevo Leon |
| Coordinates: | 26.2° North, 100.9° West (view map) | ||
| Paleocoordinates: | 35.5° North, 72.8° West (Wright 2013) | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Paleocene |
| Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
| Key time interval: | Early Paleocene | ||
| Age range of interval: | 66 - 61.66 m.y. ago |
Stratigraphy
| Geological group: | Difunta | Formation: | Las Encinas | ||
| Local section: | IGM-2996 | ||||
| Regional section: | Parras | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The stratigraphic position of the collection is within the upper third of the Las Encinas Formation (Maastrichtian to earliest Danian). The Cretaceous-Tertiary boundary is placed in the upper half of this formation. | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal siltstone |
| Includes fossils? | Y |
| Lithology description: Oyster beds. Within "Middle Siltstone Member" | |
| Environment: | marine indet. |
| Geology comments: No paleoenvironmental data. Is oyster bed, but from siliciclastic setting. | |
Taphonomy
| Modes of preservation: | body,original calcite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Studied material is deposited in the Museo de Paleontologia of the Instituto de Geologia, Universidad Nacional Autonoma de Mexico. Types are in the type collection and classified under the acronym IGM. The type locality is registered in the locality catalogue of the Museo de Paleontogia. | |
| Taxonomic list comments:Possibly representative of monospecific oyster bed. | |
Metadata
| Also known as: | IGM-2996 | ||
| Database number: | 42468 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2004-07-29 21:04:27 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2004-07-29 21:04:27 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 11300. | F. J. Vega, M.D.C. Perrilliat, and L.M. Mitre-Salazar. 1999. Paleocene ostreids from the Las Encinas Formation (Parras basin, Difunta Group), northeastern Mexico; stratigraphic implications. Geological Society of America Special Paper 340:105-110 [A. Miller/A. Hendy/A. Hendy] |