Also known as carb shale near vertebrate locality YPM281

Where: Wyoming (44.0° N, 109.0° W: paleocoordinates 48.9° N, 92.0° W)

• small collection-level geographic resolution

When: Willwood Formation, Graybullian (55.8 - 50.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: wet floodplain; lithified, carbonaceous shale

Size class: macrofossils

Preservation: adpression, original carbon

Reposited in the YPM

Collection methods: quarrying,

Primary reference: S. L. Wing, J. Alroy, and L.J. Hickey. 1995. Plant and mammal diversity in the Paleocene to Early Eocene of the Bighorn Basin. Palaeogeography, Palaeoclimatology, Palaeoecology 115:117-155 [S. Wing/H. Sims] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 11503: authorized by Scott Wing, entered by John Burns on 17.08.2001, edited by Summer Ostrowski