Where: Calvert County, Maryland (38.5° N, 76.5° W: paleocoordinates 38.7° N, 73.7° W)

• coordinate estimated from map

When: Boston Cliffs Member (Choptank Formation), Serravallian (13.7 - 11.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; red, sandy claystone

Size class: macrofossils

Preservation: original phosphate

Reposited in the USNM

Collection methods: surface (in situ),

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 70832: authorized by Mark Uhen, entered by Mark Uhen on 09.04.2007