USGS Loc. M11949, Vermilion Creek [Mancos Shale]: Santonian, Wyoming
collected by Reeside
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus barabini
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Bivalvia
- Pectinida
- Oxytomidae
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Pteria (Oxytoma) nebrascana
(Evans and Shumard 1857)
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Gastropoda
- Naticidae
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Polinices sp.
Monfort 1810
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites sp.
Lamarck 1799
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Moffat |
| Coordinates: | 40.8° North, 108.9° West (view map) | ||||
| Paleocoordinates: | 45.8° North, 74.8° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Santonian | ||
| Age range of interval: | 86.30000 - 83.60000 m.y. ago |
Stratigraphy
| Formation: | Mancos Shale | ||||
| Local section: | Vermilion Creek | Local bed: | 5224 ft | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Mancos Fm, which overlies the Dakota Sandstone, and is overlain by the Iles Fm of the Mesaverde Group. AGE: Albian-Coniacian for entire formation. Here assigned to Santonian on the basis of ammonoid and bivalve biostratigraphy (by enterer). STRATIGRAPHIC POSITION: From top of Vermilion Creek section, at 5224 ft above base of section. | |||||
Lithology and environment
| Primary lithology: | gray lithified "shale" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Gray to slate-colored shale. LITHIFICATION: Lithified, on the basis of facies description. | |
| Environment: | marine indet. |
| Geology comments: ENVIRONMENT: Marine siliciclastic. | |
Taphonomy
| Modes of preservation: | body,cast,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | USNM |
| Collectors: | Reeside |
| Collection method comments: COLLECTOR: J. B. Reeside. REPOSITORY: Presumably USNM of USGS. | |
| Taxonomic list comments:COVERAGE: Exhaustive for marine invertebrate groups. NOMENCLATURE: Not an authoritative publication, with relatively antiquated nomenclature, but species-resolution identifications. | |
Metadata
| Database number: | 87786 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2009-03-24 10:00:44 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2009-03-24 10:00:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 29509. | J. B. Reeside. 1955. Revised interpretation of the Cretaceous section on Vermilion Creek, Moffat County, Colorado. Wyoming Geological Association Guidebook - 1955 85-88 [A. Hendy/A. Hendy] |