ammonites
Potomac River - 1.5 miles below Youbedam Landing (Paleocene of the United States)

Also known as USGS Locality 26332

Where: Stafford County, Virginia (38.4° N, 77.3° W: paleocoordinates 38.9° N, 58.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Paspotansa Member (Aquia Formation), Late/Upper Paleocene (58.7 - 55.8 Ma)

• 35 feet thick bed

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified, fine-grained, glauconitic, black, green sandstone

• Sand, weathered, grayish-orange (10 YR 7/4), glauconitic, fine; contains large numbers of Turritella in lenses, bands, and large indurated masses

Size class: macrofossils

Reposited in the USGS

Primary reference: L. W. Ward. 1985. Stratigraphy and Characteristic Mollusks of the Pamunkey Group (Lower Tertiary) and the Old Church Formation of the Chesapeake Group-Virginia Coastal Plain. United States Geological Survey Professional Paper (1346)1-77 [A. Miller/D. Buick] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 61153: authorized by Arnold Miller, entered by Devin Buick on 30.05.2006