USGS 10630-CO Shublik Mountains section 87NA-1: Ashgill, Alaska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Conodonta
- Prioniodontida
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Aphelognathus aff. divergens
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Alaska |
| Coordinates: | 69.5° North, 145.6° West (view map) | ||
| Paleocoordinates: | 14.4° North, 45.9° West | ||
| Basis of coordinate: | estimated from map |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 5 | ||
| Key time interval: | Ashgill | ||
| Age range of interval: | 449.60000 - 443.80000 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Environment: | shallow subtidal indet. |
| Geology comments: Warm, possibly very shallow water depositional environment. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | microfossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Taxonomic list comments:Identified by A.G. Harris. | |
Metadata
| Database number: | 113016 | ||
| Authorizer: | A. Miller | Enterer: | S. Kolbe |
| Modifier: | S. Kolbe | Research group: | marine invertebrate |
| Created: | 2011-07-19 06:32:38 | Last modified: | 2024-03-31 19:20:45 |
| Access level: | the public | Released: | 2011-07-19 06:32:38 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 36729. | R. B. Blodgett, D. M. Rohr, A. G. Harris and R. Jia-yu. 1987. A major unconformity between Upper Ordovician and Lower Devonian strata in the Nanook Limestone, Shublik Mountains, northeastern Brooks Range. United States Geological Survey Circular 1016:18-23 [A. Miller/S. Kolbe] |