Where: Charles County, Maryland (38.5° N, 76.7° W: paleocoordinates 38.7° N, 73.4° W)

• coordinate estimated from map

When: Calvert Beach Member (Calvert Formation), Langhian (16.0 - 13.7 Ma)

• Cope refers to the beds as "Yorktown" but they are much more likely to be Calvert Formation since the Yorktown is not thought to crop out in Maryland, DN5

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

Preservation: original phosphate

Primary reference: E. D. Cope. 1868. An addition to the vertebrate fauna of the Miocene period, with a synopsis of the extinct Cetacea of the United States. Proceedings of the Academy of Natural Sciences of Philadelphia 19(4):138-157 [M. Uhen/M. Uhen/M. Uhen] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 55396: authorized by Mark Uhen, entered by Mark Uhen on 14.10.2005, edited by Austin Hendy