Cabeco da Vaca Bed 14: Oxfordian, Portugal
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Plesiochelyidae
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Craspedochelys sp.
Rütimeyer 1873
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| MMPM37, a partial shell preserved in two blocks of rock | ||||||||||
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Bivalvia
- Mytilida
- Mytilidae
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Arcomytilus sp.
Agassiz 1843
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Brachiodontes sp.
Swainson 1840
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| see common names | ||||||||||
Geography
| Country: | Portugal | State/province: | Porto de Mos |
| Coordinates: | 39.6° North, 8.8° West (view map) | ||
| Paleocoordinates: | 33.6° North, 2.0° East | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Late/Upper Jurassic |
| Stage: | Oxfordian | 10 m.y. bin: | Jurassic 5 |
| Key time interval: | Oxfordian | ||
| Age range of interval: | 161.50000 - 154.80000 m.y. ago |
Stratigraphy
| Formation: | Cabacos |
Lithology and environment
| Primary lithology: | gray mudstone |
| Includes fossils? | Y |
| Lithology description: The stratigraphic section of the quarry consists of 18 massive beds of micritic, gray to dark gray limestones, mostly mudstone to wackstone, with a rather scarce and low diversity macrofossil content | |
| Environment: | lagoonal/restricted shallow subtidal |
| Geology comments: The sampled facies of micritic limestone with brackish to restricted marine faunal elements suggest that the Cabeço da Vaca turtle lived in a low energy, probably lagoonal environment, located near a large tidal flat with fine-grained micritic sedimentation connected with inner sectors of a carbonate shelf. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Also known as: | Alqueidao da Serra | ||
| Database number: | 196750 | ||
| Authorizer: | E. Vlachos | Enterer: | E. Vlachos |
| Created: | 2018-10-03 18:10:32 | Last modified: | 2018-10-03 18:10:32 |
| Access level: | the public | Released: | 2018-10-03 18:10:32 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 66997. | A. Perez-Garcia, J. M. Brandao, P. M. Callapez, L. Machado, E. Malafaia, F. Ortega, and V. F. Santos. 2017. The oldest turtle from Portugal corresponding to the only pre-Kimmeridgian plesiochelyid (basal Eucryptodira) recognized at the generic level. Historical Biology 1-9 [E. Vlachos/E. Vlachos] |