Where: Crook County, Oregon (44.2° N, 120.3° W: paleocoordinates 43.8° 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: terrestrial

Size class: mesofossils

Preservation: mold/impression, original carbon

Collection methods: bulk,

• Cercidiphyllum is common at Lost Creek, yet apparently absent from Crooked River, and there are five species of conifers in Lost Creek but only one from Crooked River.

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 35238: authorized by Bruce Tiffney, entered by Julia Fosdick on 19.11.2003

Creative Commons license: CC BY (attribution)