Also known as Bridge Creek Flora

Where: Wheeler County, Oregon (44.6° N, 120.3° W: paleocoordinates 44.3° N, 109.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: John Day Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: lacustrine; tuff

Size class: mesofossils

Preservation: mold/impression, original carbon

Collection methods: bulk,

• "assemblage is dominated by Alnus, Betula, Quercus, and Metasequoia....apparent absence of Asterocarpinus fruits and Paracarpinus leaves in this assemblage contrasts with their presence in all other Bridge Creek assemblages examined in this study."

Primary reference: H. W. Meyer and S. R. Manchester. 1997. The Oligocene Bridge Creek flora of the John Day Formation, Oregon. University of California Publications in Geological Sciences 141:1-195 [J. Alroy/J. Alroy/H. Wang]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35220: authorized by Bruce Tiffney, entered by Julia Fosdick on 18.11.2003, edited by Nicholas Famoso

Creative Commons license: CC BY (attribution)