Opal [USGS]: Bridgerian, Wyoming
collected by Dr W. D. Matthew and Mr Walter Granger 1902
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Testudines
- Trionychidae
|
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|
Amyda aequa n. sp.
Hay 1908
|
2 specimens | |||||||||
| recombined as Trionyx aequa | ||||||||||
| two nearly complete carapaces of a trionychid | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wyoming |
| Coordinates: | 41.8° North, 110.3° West (view map) | ||
| Paleocoordinates: | 45.8° North, 96.5° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| 10 m.y. bin: | Cenozoic 2 | ||
| Key time interval: | Bridgerian | ||
| Age range of interval: | 50.50000 - 46.20000 m.y. ago |
Stratigraphy
| Formation: | Bridger | ||||
| Stratigraphy comments: lowest of the Bridger formation |
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ) | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Dr W. D. Matthew and Mr Walter Granger | Collection dates: | 1902 |
Metadata
| Database number: | 131939 | ||
| Authorizer: | R. Benson | Enterer: | R. Benson | Research group: | vertebrate |
| Created: | 2012-08-02 19:41:53 | Last modified: | 2012-08-02 04:41:53 |
| Access level: | the public | Released: | 2012-08-02 19:41:53 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 14442. | ETE | O. P. Hay. 1908. The fossil turtles of North America. Carnegie Institution of Washington Publication 75:1-568 [M. Carrano/M. Carrano/M. Carrano] |