Hintze faunule J-7 from Ibex: Blackhillsian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Trilobita
- Asaphida
- Asaphidae
|
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Kirkella sp.
Kobayashi 1942
|
c rank | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Utah |
| Coordinates: | 38.9° North, 113.5° West (view map) | ||
| Paleocoordinates: | 7.4° South, 83.0° West | ||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Early Ordovician |
| Stage: | Floian | 10 m.y. bin: | Ordovician 2 |
| Key time interval: | Blackhillsian | ||
| Age range of interval: | 473.9 - 470 m.y. ago |
Stratigraphy
| Geological group: | Pogonip | Formation: | Wah Wah |
| Local section: | Section J of Hintze | Local bed: | 28 ft |
| Local order: | bottom to top | ||
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | gray lithified grainstone |
| Secondary lithology: | lithified siltstone |
| Includes fossils? | Y |
| Lithology description: Calcisiltite, medium gray, quartz silty, thin bedded forming low ledges capped by massive 18" ledge. | |
| Environment: | deep subtidal ramp |
| Geology comments: Mulitple sources indicate that this was a carbonate dominated ramp, with substauntial siliciclastic input, below normal wave base, above storm wave base. | |
Taphonomy
| Modes of preservation: | replaced with silica |
Collection methods and comments
| Collection excludes: | some macrofossils,some microfossils |
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:The faunal lists in Hintze 1952 are updated versions of those in Hintze 1951 and, so, are used here. | |
Metadata
| Database number: | 63844 | ||
| Authorizer: | A. Miller | Enterer: | A. Miller |
| Modifier: | A. Miller | Research group: | marine invertebrate |
| Created: | 2006-08-22 12:38:01 | Last modified: | 2006-08-23 16:25:23 |
| Access level: | the public | Released: | 2006-08-22 12:38:01 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 18329. | L. F. Hintze. 1953. Lower Ordovician trilobites from western Utah and eastern Nevadea. Utah Geological and Mineralogical Survey Bulletin 48:249 p. [A. Miller/A. Miller/P. Novack-Gottshall] |