Governor Run, Zone 15 (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: Calvert Beach Member (Calvert Formation), Serravallian (13.8 - 11.6 Ma)

• Zones 14-16A are regarded as Serravallian in age.

Environment/lithology: foreshore; blue claystone

• sparse molluscs, low in diversity; subtropical environment in embayment and dry onshore; area not far from shore, bay, short-term eustatic transgression events, long-term regression trend
• bluish clay

Size class: macrofossils

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 70836: authorized by Mark Uhen, entered by Mark Uhen on 09.04.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Carnivora - Phocidae
"Leptophoca lenis" = Leptophoca proxima1
"Leptophoca lenis" = Leptophoca proxima1 Van Beneden 1876 seal
 Cetacea -
"Megaptera expansa" = Eschrichtius expansus2
"Megaptera expansa" = Eschrichtius expansus2 Cope 1868 whale
1Koretsky 2001; 2Uhen 2007