Where: Pueblo County, Colorado (38.3° N, 104.7° W: paleocoordinates 38.2° N, 67.3° W)
• small collection-level geographic resolution
When: Sciponoceras Ammonite zone, Bridge Creek Limestone Member (Greenhorn Limestone Formation), Cenomanian (100.5 - 93.9 Ma)
• 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).
• bed-level stratigraphic resolution
Environment/lithology: basinal (); lithified, burrowed, gray limestone
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.
Size class: macrofossils
Collection methods: bulk, mechanical,
• Bulk sample disaggregated in lab.
Primary reference: 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]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 2744: authorized by Charles Marshall, entered by Sofy Low on 16.07.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
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Inoceramidae indet., "Inoceramus pictus" = Inoceramus (Inoceramus) pictus
Inoceramidae indet. Giebel 1852 clam originally entered as "informal Inoceramid indet."; changed by JA 21.2.07
"Inoceramus pictus" = Inoceramus (Inoceramus) pictus Sowerby 1829 clam "pictus pictus" - originally entered as "Inoceramus pictus pictus"
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Pycnodonte newberryi oyster | |
| Cephalopoda | |
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Sciponoceras sp. Hyatt 1894 ammonite | |