First Canyon, collection 5H: Sinemurian, Nevada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Arietitidae
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Arnioceras spp.
Hyatt 1867
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Arnioceras aff. arnouldi
(Dumortier 1867)
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Arnioceras humboldti
Hyatt 1889
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Nevada |
| Coordinates: | 38.9° North, 117.9° West (view map) | ||
| Paleocoordinates: | 17.1° North, 45.1° West (Wright 2013) | ||
| Basis of coordinate: | estimated from map |
Time
| Period: | Jurassic | Epoch: | Early Jurassic |
| Stage: | Sinemurian | 10 m.y. bin: | Jurassic 1 |
| Key time interval: | Sinemurian | Ammonoid zone: | Leslei |
| Age range of interval: | 199.5 - 192.9 m.y. ago |
Stratigraphy
| Formation: | Sunrise | Member: | Five Card Draw | ||
| Stratigraphy comments: Early Leslei Zone |
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: | 201265 | ||
| Authorizer: | J. Pálfy | Enterer: | E. Kovács | Research group: | marine invertebrate |
| Created: | 2019-05-02 12:08:53 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | authorizer only | Released: | 2021-05-02 12:08:53 |
| Creative Commons license: | CC0 |
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] |