George Washington Birthplace National Monument, Zone 12 (Miocene of the United States)

Also known as Wakefield National Park

Where: Westmoreland County, Virginia (38.2° N, 76.9° W: paleocoordinates 38.4° N, 73.7° W)

• coordinate stated in text

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

• early late Barstovian

Environment/lithology: estuary or bay; sandy claystone

• sparse molluscs, low in diversity; subtropical environment in embayment and dry onshore; area not far from shore

Size class: macrofossils

Preservation: original phosphate

Primary reference: A. C. Myrick. 1979. Variation, taphonomy, and adaptation of the Rhabdosteidae (=Eurhinodelphidae) (Odontoceti, Mammalia) from the Calvert Formation of Maryland and Virginia. University of California, Los Angeles 1-411 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 57784: authorized by Mark Uhen, entered by Mark Uhen on 02.01.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Cetacea - Physeteridae
Orycterocetus sp.2 Leidy 1853 sperm whale
 Cetacea - Eurhinodelphinidae
Schizodelphis barnesi1 Myrick 1979 toothed whale
Schizodelphis sulcatus1 Gervais 1853 toothed whale