Where: Wasco County, Oregon (44.9° N, 121.3° W: paleocoordinates 44.6° N, 112.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: John Day Formation, late Late Arikareean (29.5 - 18.5 Ma)

• "in the basal few meters of the exposed section" (Woodburne and Robinson 1977)

•said to be "latest Arikareean"

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; tuffaceous, brown sandstone and siltstone

Size class: macrofossils

Collection methods: surface (float),

• "Most of the fossils were discovered as float" (Woodburne and Robinson 1977)

Primary reference: L. Dingus. 1990. Systematics, stratigraphy, and chronology for mammalian fossils (Late Arikareean to Hemingfordian) from the uppermost John Day Formation, Warm Springs, Oregon. PaleoBios 12(47/48):1-24 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 18013: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Patricia Holroyd and Jonathan Marcot

Creative Commons license: CC BY (attribution)