El Miedo Cave: Middle Miocene, Venezuela
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Testudines
- Podocnemididae
|
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| IVIC-P-2908, almost complete skull | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Venezuela | State/province: | Falcon |
| Coordinates: | 10.9° North, 68.6° West (view map) | ||
| Paleocoordinates: | 11.4° North, 64.4° West (Wright 2013) | ||
| Basis of coordinate: | stated in text |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Middle Miocene | ||
| Age range of interval: | 15.98 - 11.63 m.y. ago | ||
| Age estimate: | 12.24 Ma (Sr isotope) |
Stratigraphy
| Formation: | Capadare | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: ased on its foraminifer assemblage, the Capadare Formation was assigned to the middle Miocene, Globorotalia fohsi fohsi-Globorotalia sjakensis Biozone (Renz, 1948; Lorente, 1978; D ́ıaz de Gamero, 1985). Using strontium isotope analyses (ratio of 87Sr/86Sr) from a marine mollusc shell (Ostrea sp.), (Solo ́rzano & Rinco ́n, in press) placed the Capadare Formation in the middle Miocene (∼12.24 Ma). | |||||
Lithology and environment
| Primary lithology: | "limestone" |
| Includes fossils? | Y |
| Environment: | shallow subtidal indet. |
| Geology comments: The Capadare Formation is a thick sequence of massive carbonate layers deposited in shallows marine waters (Lorente, 1978), which crops out in northwestern Venezuela. It represents isolated carbonate platforms, without coastal or continental influence, in entirely open sea conditions, with well oxygenated and clear waters, normal salinity, and moderate energy in a tropical climate (Lorente, 1978; Diaz de Gamero, 1985) | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | chemical |
| Collection size: | 1 specimens |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: IVIC-P-2908 (IVIC-P: Coleccion de Paleontologia, Instituto Venezolano
de Investigaciones Cientificas, Caracas, Venezuela) | |
| Taxonomic list comments:The record of vertebrates from the Capadare Formation includes Pelagornis cf. P. chilensis (Aves: Odontopterygiformes) and shark teeth, but Pleistocene fossils were also recovered in the bottom of the El Miedo cave. | |
Metadata
| Database number: | 191413 | ||
| Authorizer: | E. Vlachos | Enterer: | E. Vlachos | Research group: | vertebrate |
| Created: | 2018-01-28 14:40:37 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2018-01-28 14:40:37 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 64593. | G. S. Ferreira, A. D. Rincon, A. Solorzano and M. C. Langer. 2015. The last marine pelomedusoids (Testudines: Pleurodira): a new species of Bairdemys and the paleoecology of Stereogenyina. PeerJ 1-29 [E. Vlachos/E. Vlachos/E. Vlachos] |