Where: Wheeler County, Oregon (44.9° N, 120.3° W: paleocoordinates 45.6° N, 107.1° W)
• coordinate estimated from map
When: Big Basin Member (John Day Formation), Duchesnean (39.7 - 37.0 Ma)
• "Duchesnean (early late Eocene), between Member A Ignimbrite dated 39.22 ± 0.03 Ma (Bestland et al., 1999) and Whitecap Knoll Tuff dated 38.4 ± 0.7 Ma (Manchester, 2000)."
Environment/lithology: terrestrial; lithology not reported
Size class: mesofossils
Primary reference: J. X. Samuels and W. W. Korth. 2017. The first Eocene rodents from the Pacific Northwest, USA. Palaeontologia Electronica 20.2.24A:1-17 [P. Holroyd/P. Holroyd/P. Holroyd]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 185944: authorized by Patricia Holroyd, entered by Patricia Holroyd on 27.05.2017, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
| |
Pseudotomus sp. Cope 1872 rodent |