USGS 6387-CO: Early Cambrian, Nevada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Redlichiida
- Nevadiidae
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Nevadella sp.
Raw 1936
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Helcionelloida
- Helcionellidae
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Helcionellidae indet.
Wenz 1938
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| "Helcionellids" | ||||||||||
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Archaeocyatha
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Archaeocyatha indet.
(Vologdin 1937)
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| "Archaeocyathids" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nevada | County: | Esmeralda |
| Coordinates: | 37.9° North, 117.9° West (view map) | ||||
| Paleocoordinates: | 5.9° South, 97.6° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian |
| 10 m.y. bin: | Cambrian 1-3 |
| Key time interval: | Early Cambrian |
| Age range of interval: | 538.8 - 509 m.y. ago |
Stratigraphy
| Formation: | Poleta |
Lithology and environment
| Primary lithology: | massive,gray "limestone" | ||
| Secondary lithology: | brown,gray,yellow siltstone | ||
| Includes fossils? | Y | ||
| Environment: | marine indet. | Tectonic setting: | passive margin |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Also known as: | DM-69-128 | ||
| Database number: | 204025 | ||
| Authorizer: | J. Marcot | Enterer: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2019-08-29 12:00:27 | Last modified: | 2019-08-29 12:00:27 |
| Access level: | the public | Released: | 2019-08-29 12:00:27 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 69918. | P. T. Robinson, J. H. Stewart, R. J. Moiola and J. P. Albers. 1976. Geologic map of the Rhyolite Ridge quadrangle, Esmeralda County, Nevada. [J. Marcot/J. Marcot] |