Gold Point, Poleta Fm., locality 1473: Montezuman, Nevada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita
- Redlichiida
- Holmiidae
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Grandinasus auricampus
Hollingsworth 2006
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see common names |
Geography
Country: | United States | State/province: | Nevada | County: | Esmeralda |
Coordinates: | 37.4° North, 117.3° West (view map) | ||||
Paleocoordinates: | 3.4° South, 97.2° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | outcrop |
Time
Period: | Cambrian | Epoch: | Series 2 |
Stage: | Stage 3 | 10 m.y. bin: | Cambrian 2 |
Key time interval: | Montezuman | Zone: | Nevadella |
Age range of interval: | 519.9 - 514.8 m.y. ago |
Stratigraphy
Lithology and environment
Primary lithology: | "limestone" |
Lithology description: basal, ribbon limestone | |
Environment: | shallow subtidal indet. |
Geology comments: Solenopleurids, corynexochids, and Bradyfallotaspis are about as abundant as the associated holmiids, but nevadiids are still the predominant trilobites. This nevadiiddominated mixed biofacies occurs in a relatively shallow, mixed
carbonate-siliciclastic environment. Trilobites are occasionally common in the ribbon limestone and in the shaly middle unit of the lower member of the Poleta, but very rare, except as small fragments, in the carbonate grainstones. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
Reason for describing collection: | taxonomic analysis |
Metadata
Database number: | 140617 | ||
Authorizer: | W. Kiessling | Enterer: | M. Krause |
Modifier: | M. Krause | Research group: | marine invertebrate |
Created: | 2013-03-12 22:30:55 | Last modified: | 2013-03-12 10:36:25 |
Access level: | authorizer only | Released: | 2013-06-12 22:30:55 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
45528. | J. S. Hollingsworth. 2006. Holmiidae (Trilobita: Olenellina) of the Montezuman Stage (Early Cambrian) in Western Nevada. Journal of Paleontology 80(2):309-332 [W. Kiessling/M. Krause] |