Harding Formation Trilobites B: Caradoc, Colorado
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita
- Proetida
- Dimeropygidae
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Toernquistia sp.
Reed 1896
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see common names |
Geography
Country: | United States | State/province: | Colorado | County: | Fremont |
Coordinates: | 38.0° North, 105.0° West (view map) | ||||
Paleocoordinates: | 14.9° South, 74.0° West | ||||
Geographic resolution: | local area |
Time
Period: | Ordovician | Epoch: | Late Ordovician |
10 m.y. bin: | Ordovician 4-5 | ||
Key time interval: | Caradoc | ||
Age range of interval: | 458.4 - 449.6 m.y. ago |
Stratigraphy
Formation: | Harding | ||||
Stratigraphic resolution: | formation | ||||
Stratigraphy comments: Stratigraphy from "Harding and Fremont Formations, Colorado" Sweet 1954. |
Lithology and environment
Primary lithology: | chert | ||
Includes fossils? | Y | ||
Environment: | marine indet. | Tectonic setting: | cratonic basin |
Geology comments: Environments from S. Holland |
Taphonomy
Modes of preservation: | mold/impression |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | biostratigraphic analysis |
Metadata
Database number: | 170686 | ||
Authorizer: | M. Hopkins | Enterer: | M. Hopkins | Research group: | marine invertebrate |
Created: | 2015-06-26 14:21:54 | Last modified: | 2015-06-26 14:21:54 |
Access level: | the public | Released: | 2015-06-26 14:21:54 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
3835. | E. A. Frederickson and J. M. Pollack. 1952. Two Trilobite Genera from the Harding Formation (Ordovician) of Colorado. Journal of Paleontology 26(4):641-644 [S. Holland/T. Hanson] |