USGS 2537-CO: Steptoean, Nevada
collected by A. R. Palmer 1960
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita
- Olenida
- Aphelaspidae
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Dicanthopyge convergens
Palmer 1965
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Trilobita
- Olenida
- Pterocephaliidae
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Tumicephalus depressus
Palmer 1965
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see common names |
Geography
Country: | United States | State/province: | Nevada | County: | White Pine |
Coordinates: | 40.0° North, 114.9° West (view map) | ||||
Paleocoordinates: | 4.0° South, 87.4° West | ||||
Basis of coordinate: | unpublished field data | ||||
Geographic resolution: | outcrop |
Time
Period: | Cambrian | Epoch: | Furongian |
10 m.y. bin: | Cambrian 5 | ||
Key time interval: | Steptoean | Trilobite zone: | Dicanthopyge |
Age range of interval: | 497 - 493 m.y. ago |
Stratigraphy
Formation: | Dunderberg Shale |
Stratigraphic resolution: | bed |
Lithology and environment
Primary lithology: | lithified silty "limestone" | ||
Secondary lithology: | lithified siltstone | ||
Lithology description: Interbedded siltstone and silty limestone | |||
Environment: | carbonate indet. | Tectonic setting: | passive margin |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection excludes: | some macrofossils | ||
Collection methods: | mechanical,field collection | ||
Reason for describing collection: | biostratigraphic analysis | ||
Museum repositories: | USGS,USNM | ||
Collectors: | A. R. Palmer | Collection dates: | 1960s |
Metadata
Database number: | 110442 | ||
Authorizer: | M. Hopkins | Enterer: | M. Hopkins | Research group: | marine invertebrate |
Created: | 2011-06-08 09:09:39 | Last modified: | 2011-06-07 19:09:39 |
Access level: | the public | Released: | 2011-06-08 09:09:39 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
36349. | A. R. Palmer. 1965. Trilobites of the Late Cambrian Pterocephaliid Biomere in the Great Basin, United States. United States Geological Survey Professional Paper 493:1-105 [M. Hopkins/M. Hopkins] |