Graylock section, P. morganense assemblage: Angulata, Oregon
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Arietitidae
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| (1 measurement) | ||||||||||
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Cephalopoda
- Ammonitida
- Psiloceratidae
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| (1 measurement) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Oregon |
| Coordinates: | 44.1° North, 119.4° West (view map) | ||
| Paleocoordinates: | 18.6° North, 46.7° West (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Early Jurassic |
| Stage: | Hettangian | 10 m.y. bin: | Jurassic 1 |
| Key time interval: | Angulata | ||
| Age range of interval: | 201.4 - 199.5 m.y. ago |
Stratigraphy
| Formation: | Graylock |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: Northwest Museum of Natural History (NWMNH) | |
Metadata
| Database number: | 157507 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2014-06-22 19:53:05 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2014-06-22 19:53:05 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 51805. | D. G. Taylor. 1998. Late Hettangian-early Sinemurian (Jurassic) ammonite biochronology of the western Cordillera, United States. Geobios 31:467-497 [M. Clapham/M. Clapham] |