Where: Moffat County, Wyoming (40.8° N, 108.9° W: paleocoordinates 44.6° N, 73.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Mancos Shale Formation, Coniacian (89.8 - 86.3 Ma)
• 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 Coniacian on the basis of ammonoid and bivalve biostratigraphy (by enterer). STRATIGRAPHIC POSITION: From top of Vermilion Creek section, at 1390 ft above base of section.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, gray shale
Size class: macrofossils
Preservation: cast, mold/impression
Collected by Reeside; reposited in the USNM
Collection methods: surface (in situ),
• COLLECTOR: J. B. Reeside. REPOSITORY: Presumably USNM of USGS.
Primary reference: 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]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 87769: authorized by Austin Hendy, entered by Austin Hendy on 24.03.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Bivalvia | |
Ostrea congesta Conrad 1843 oyster | |
Inoceramus (Haploscapha) grandis, "Inoceramus cf. stantoni" = Mytiloides stantoni
"Inoceramus cf. stantoni" = Mytiloides stantoni Sokolow 1914 clam | |
Lucina sp. Bruguière 1797 clam | |
Cephalopoda | |
Baculites codyensis Reeside 1927 ammonite | |
Anisoceras sp. Pictet 1854 ammonite | |
Osteichthyes | |
? Echidnocephalus sp. von der Marck 1858 |