Pueblo, CO (C2-4): Cenomanian, Colorado
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
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| 1 specimen | ||||||||||
| originally entered as "Gastropod indet." | ||||||||||
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Cephalopoda
- Ammonitida
- Baculitidae
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Sciponoceras sp.
Hyatt 1894
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35 specimens | |||||||||
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Bivalvia
- Myalinida
- Inoceramidae
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| 4 specimens | ||||||||||
| originally entered as "informal Inoceramid indet."; changed by JA 21.2.07 | ||||||||||
| 3 specimens | ||||||||||
| originally entered as "Inoceramus tenuistriatus(?)" | ||||||||||
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Inoceramus pictus
Sowerby 1829
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1 specimen | |||||||||
| "pictus gracilestiatus" - originally entered as "Inoceramus pictus gracilestiatus" | ||||||||||
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Bivalvia
- Pectinida
- Entoliidae
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| 4 specimens | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Colorado | County: | Pueblo |
| Coordinates: | 38.3° North, 104.7° West (view map) | ||||
| Paleocoordinates: | 44.7° North, 62.3° West (Wright 2013) | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 | *Epoch: | Gallic |
| *International age/stage: | Cenomanian - Cenomanian | ||
| Key time interval: | Cenomanian | Zone: | Sciponoceras Ammonite |
| Age range of interval: | 100.5 - 93.9 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Greenhorn Limestone | Member: | Bridge Creek Limestone | ||
| Local section: | C2 | Local bed: | 4 (Unit 5) | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Upper Cenomanian Bed horizon is the sample number not the lithologic unit number. The lithologic unit numbers that correspond to the sample numbers given can be found in reference for collection (Elder, 87). | |||||
Lithology and environment
| Primary lithology: | burrows,gray lithified "limestone" | ||
| Environment: | basinal (carbonate) | Tectonic setting: | cratonic basin |
| Geology comments: Very well indurated, micritic, low contact gradational. Note: Section C2 constitutes interbedded limestones and shales, but this sedimentary structure is not reflected in the descriptions of each collection, as each is often a single bed, or a portion thereof. | |||
Taphonomy
| Modes of preservation: | body,cast |
Collection methods and comments
| Collection methods: | bulk,mechanical,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Bulk sample disaggregated in lab. | |
Metadata
| Database number: | 2736 | ||
| Authorizer: | C. Marshall | Enterer: | S. Low | Research group: | marine invertebrate |
| Created: | 1999-07-16 18:47:41 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2000-11-20 13:53:17 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 93. | W. P. Elder. 1987. The paleoecology of the Cenomanian-Turonian (Cretaceous) stage boundary extinctions at Black Mesa, Arizona. Palaios 2(1):24-40 [C. Marshall/S. Low/A. Clement] |