Harding sandstone cephalopods, Twin Mountain: Franklinian, Colorado
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Actinocerida
- Ormoceratidae
|
||||||||||
|
Ormoceras pollacki n. sp.
|
||||||||||
| holotype and paratype at the Paleontological Research Institution | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Colorado | County: | Fremont County |
| Coordinates: | 38.4° North, 105.3° West (view map) | ||||
| Paleocoordinates: | 14.5° South, 73.8° West | ||||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Ordovician | Epoch: | Late Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Franklinian | ||
| Age range of interval: | 457 - 449.8 m.y. ago |
Stratigraphy
| Formation: | Harding Sandstone |
Lithology and environment
| Primary lithology: | "shale" |
| Includes fossils? | Y |
| Lithology description: from a shaly zone near the middle of the Harding sandstone, and about 30 feet above its base | |
| Environment: | offshore indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 216976 | ||
| Authorizer: | B. Seuss | Enterer: | B. Seuss |
| Modifier: | M. Carrano | Research group: | marine invertebrate |
| Created: | 2021-01-08 01:00:00 | Last modified: | 2022-10-14 16:26:46 |
| Access level: | the public | Released: | 2021-01-08 01:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 74462. | R.H. Flower. 1952. Cephalopods from the Harding and Manitou Formations of Colorado. Journal of Paleontology 26(3):505-518 [B. Seuss/B. Seuss/B. Seuss] |