150 meters north of Harding Quarry, northwest of Cañon City: Franklinian, Colorado
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Pteraspidomorpha
- Astrapidiformes
- Astraspididae
|
|||||||
|
Astraspis desiderata
Walcott 1892
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Colorado | County: | Fremont |
| Coordinates: | 38.5° North, 105.3° West (view map) | ||||
| Paleocoordinates: | 14.4° South, 73.7° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Late Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Franklinian | Conodont zone: | Phragmodus undatus |
| Age range of interval: | 457 - 449.8 m.y. ago |
Stratigraphy
| Formation: | Harding Sandstone |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | sandstone |
| Environment: | open shallow subtidal |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | FMNH,USNM |
Metadata
| Database number: | 155772 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2014-04-30 21:32:38 | Last modified: | 2016-12-22 23:29:50 |
| Access level: | the public | Released: | 2014-04-30 21:32:38 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 50951. | I. J. Sansom, M. P. Smith, M. M. Smith and P. Turner. 1997. Astraspis, the anatomy and histology of an Ordovician fish. Palaeontology 40(3):625-643 [P. Wagner/P. Wagner] |