Governor Run, Zone 18 (Miocene of the United States)
Where: Calvert County, Maryland (38.5° N, 76.5° W: paleocoordinates 38.7° N, 73.6° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Drumcliff Member (Calvert Formation), Serravallian (13.7 - 11.6 Ma)
Environment/lithology: marine; yellow, sandy claystone
• yellowish sandy clay
Primary reference: G. B. Shattuck. 1904. Geological and paleontological relations, with a review of earlier investigations. Maryland Geological Survey Miocene Text xxxiii-clv [M. Uhen/M. Uhen] more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 70839: authorized by Mark Uhen, entered by Mark Uhen on 09.04.2007