Also known as Roadcuts on Mississippi Route 30, on N-facing slope of Wilhite Creek valley from 0.7 to 1.7 miles S of Keownville, Union Co., Miss.
Where: Union County, Mississippi (34.5° N, 89.0° W: paleocoordinates 38.2° N, 65.8° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Keownville Member (Ripley Formation), Maastrichtian (72.1 - 66.0 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; yellow, silty, sandy limestone
Size class: mesofossils
Reposited in the USGS
• ? L.W. Stephenson and N.F. Sohl 1955
Primary reference: N. F. Sohl. 1960. Archeogastropoda, Mesogastropoda and stratigraphy of the Ripley, Owl Creek, and Prairie Bluff Formations. US Geological Survey Professional Paper 331:1-151 [M. Kosnik/M. Kosnik]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 7608: authorized by Matt Kosnik, entered by Matt Kosnik on 18.07.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
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"Exogyra costata" = Exogyra (Exogyra) costata
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