D 1836 CO: Ibexian, Nevada
collected by J. Ross, Jr.
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Proetida
- Hystricuridae
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Hystricurus cf. genalatus
Ross 1951
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| recombined as Genalaticurus genalatus | |||||||
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Trilobita
- Asaphida
- Asaphidae
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Bellefontia sp.
Walcott 1924
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Nevada | County: | White Pine |
| Coordinates: | 39.5° North, 114.9° West (view map) | ||||
| Paleocoordinates: | 5.5° South, 84.2° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| 10 m.y. bin: | Cambrian-Ordovician | ||
| Key time interval: | Ibexian | Trilobite zone: | B? |
| Age range of interval: | 487.50000 - 470.00000 m.y. ago |
Stratigraphy
| Geological group: | Pogonip | Formation: | Woodward B | ||
| Local section: | Above Steptoe Ranch, Egan R., NV | Local bed: | 45 ft | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Ibexian | |||||
Lithology and environment
| Primary lithology: | lithified "limestone" | ||
| Secondary lithology: | lithified conglomerate | ||
| Lithology description: flat-pebble; calcarenitic; fine-grained calcarenite | |||
| Environment: | open shallow subtidal | Tectonic setting: | passive margin |
| Geology comments: carbonate ramp, above wave base | |||
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk,field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collectors: | J. Ross, Jr. |
Metadata
| Also known as: | SF 645 | ||
| Database number: | 104561 | ||
| Authorizer: | S. Finnegan | Enterer: | S. Finnegan |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2011-02-07 12:04:21 | Last modified: | 2018-05-16 11:03:02 |
| Access level: | the public | Released: | 2011-02-07 12:04:21 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 25411. | R. J., J.r. Ross. 1970. Ordovician Brachiopods, Trilobites, and Stratigraphy in Eastern and Central Nevada. United States Geological Survey Professional Paper 639:1-99 [S. Finnegan/S. Finnegan/P. Wagner] |