Sierra del Alamo, Unit 10: Hettangian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Ammonitida
- Psiloceratidae
|
|||||||
|
Badouxia mexicana
|
|||||||
| see common names | |||||||
Geography
| Country: | Mexico | State/province: | Sonora |
| Coordinates: | 30.6° North, 112.6° West (view map) | ||
| Paleocoordinates: | 15.4° North, 55.8° West | ||
| Basis of coordinate: | estimated from map |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Hettangian | 10 m.y. bin: | Jurassic 1 |
| Key time interval: | Hettangian | Ammonoid zone: | Canadensis |
| Age range of interval: | 201.40000 - 199.50000 m.y. ago |
Stratigraphy
| Formation: | Antimonio | ||||
| Stratigraphy comments: ~10 m from the basis of the section |
Lithology and environment
| Primary lithology: | "siliciclastic" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | cast |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 201179 | ||
| Authorizer: | J. Pálfy | Enterer: | E. Kovács | Research group: | marine invertebrate |
| Created: | 2019-05-02 10:21:18 | Last modified: | 2019-05-02 10:21:18 |
| Access level: | authorizer only | Released: | 2021-05-02 10:21:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 68915. | D. Taylor, J. Guex, and M. Rakus. 2001. Hettangian and Sinemurian ammonoid zonation for the western Cordillera of North America. Bulletin de la Société Vaudoise des Sciences Naturelles 87(4):381-421 [J. Pálfy/E. Kovács] |