USGS D921-CO: Middle Ordovician, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Trilobita
- Phacopida
- Pterygometopidae
|
||||||||||
|
aff. Achatella sp.
Delo 1935
|
||||||||||
|
Trilobita
- Asaphida
|
||||||||||
|
Asaphida indet.
Salter 1864
|
||||||||||
| "Asaphid with minimum of six thoracic segments" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Inyo |
| Coordinates: | 36.9° North, 118.1° West (view map) | ||||
| Paleocoordinates: | 5.8° South, 84.8° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Middle Ordovician |
| 10 m.y. bin: | Ordovician 2-3 | ||
| Key time interval: | Middle Ordovician | ||
| Age range of interval: | 470 - 458.4 m.y. ago |
Stratigraphy
| Formation: | Badger Flat |
Lithology and environment
| Primary lithology: | not reported | ||
| Includes fossils? | Y | ||
| Environment: | marine indet. | Tectonic setting: | passive margin |
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils,mesofossils,microfossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | USGS |
Metadata
| Database number: | 196137 | ||
| Authorizer: | J. Marcot | Enterer: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2018-09-05 13:42:49 | Last modified: | 2018-09-05 13:42:49 |
| Access level: | the public | Released: | 2018-09-05 13:42:49 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 66726. | D. C. Ross. 1966. Stratigraphy of some Paleozoic formations in the Independence quadrangle, Inyo County, California. United States Geological Survey Professional Paper 396:1-64 [J. Marcot/J. Marcot] |