Horsehead Cliffs, Zone 14 (Miocene of the United States)

Also known as Westmoreland State Park

Where: Westmoreland County, Virginia (38.2° N, 76.9° W: paleocoordinates 38.4° N, 73.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Calvert Beach Member (Calvert Formation), Langhian (16.0 - 13.8 Ma)

Environment/lithology: foreshore; diatomaceous, gray, 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
• blue-gray diatomaceous clay

Size class: macrofossils

Primary reference: M. D. Uhen. 2007. USNM Chesapeake Group Cetacean Collection Data. [M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 71806: authorized by Mark Uhen, entered by Mark Uhen on 10.05.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Acipenseriformes - Acipenseridae
Acipenser sp. Linnaeus 1758 sturgeon
Mammalia
 Carnivora - Phocidae
"Leptophoca lenis" = Leptophoca proxima
"Leptophoca lenis" = Leptophoca proxima Van Beneden 1876 seal
 Cetacea -
Parietobalaena palmeri Kellogg 1924 whale