Where: Kane County, Utah (37.1° N, 111.6° W: paleocoordinates 38.5° N, 74.4° W)
• small collection-level geographic resolution
When: Sciponoceras Ammonite zone, Tropic Shale Formation, Late/Upper Cenomanian (99.6 - 93.5 Ma)
• 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, gray, green, calcareous limestone
Note: Section U1 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 3323: authorized by Charles Marshall, entered by Sofy Low on 29.07.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
| Gastropoda | |
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| |
|
Turritella sp. Lamarck 1799 turret shell | |
| Cephalopoda | |
|
Sciponoceras sp. Hyatt 1894 ammonite | |
| Bivalvia | |
|
| |
|
Lucina sp. Bruguière 1797 clam | |
|
| |
|
Pseudoptera sp. Meek 1873 oyster | |
|
Phelopteria sp. Stephenson 1953 pearl oyster | |
|
Exogyra acroumbonata oyster | |
|
Plicatula sp. Lamarck 1801 scallop | |
|
Aucellina sp. Pompeckj 1901 scallop | |
|
Lima sp. Bruguière 1797 file clam | |
|
Syncyclonema sp. Meek 1864 scallop | |
|
Camptonectes sp. Meek 1864 scallop | |
| Sedentaria | |