ammonites
Bed A - Warren Brothers sand pits (Miocene of the United States)

Also known as USGS Locality 26417

Where: Henrico County, Virginia (37.5° N, 77.2° W: paleocoordinates 37.8° N, 72.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Old Church Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• 1 foot thick bed

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified, fine-grained, phosphatic, gray, blue sandstone

• Sand, blue-gray (5 B 5/1), fine, phosphatic, pebbles along lower contact

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 60658: authorized by Arnold Miller, entered by Devin Buick on 19.05.2006, edited by Mark Uhen