Where: Douglas County, Washington (47.5° N, 119.9° W: paleocoordinates 47.3° N, 115.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Douglas Canyon Formation, Early/Lower Miocene to Early/Lower Miocene (23.0 - 5.3 Ma)

• beneath the "Columbia River lavas" and said to be "late Miocene" and equivalent to the "Latah formation of Spokane" based on floral composition; the age of the Latah Formation is from "12.1-21.3 million years" according to Engel 2004, i.e., early or middle Miocene

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; shale

Size class: macrofossils

Preservation: adpression

Collected by A. D. Hoffman in 1931

• Walker Museum collection

Primary reference: A. D. Hoffman. 1932. The Douglas Canyon flora of east central Washington. Journal of Geology 40(8):735-738 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 103753: authorized by John Alroy, entered by John Alroy on 01.02.2011

Creative Commons license: CC BY (attribution)