Where: Malheur County, Oregon (43.6° N, 117.5° W: paleocoordinates 44.2° N, 115.0° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Juntura Formation, Clarendonian (12.5 - 9.4 Ma)

• "The Juntura Formation outcrops in the basin and around the town of the same name in southeastern Oregon. The Buck Mountain Basalts from the lower part of the formation have been dated to 12.5 Ma (late Barstovian–early Clarendonian; Camp et al., 2003), and the formation is overlain unconformably by the 9.5 Ma Devine Canyon Ashflow Tuff (late Clarendonian; Hooper et al., 2002). The fossiliferous units of the Juntura Formation (the Juntura fauna of Russell, 1956, equivalent to the Black Butte local fauna of Shotwell, 1963) are from its uppermost part and are composed primarily of light-colored volcaniclastic sediments (Bowen et al., 1963). Based on taxonomic composition, Shotwell and Russell (1963) assigned the fauna to the late Clarendonian (10–9 Ma; Tedford et al., 2004)." (Orcutt & Hopkins 2011)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: J. A. Shotwell and D. E. Russell. 1963. Mammalian fauna of the Upper Juntura formation, the Black Butte local fauna. Transactions of the American Philosophical Society 53(1):42-69 [J. Alroy/J. Alroy/R. Hulbert]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 18818: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Richard Hulbert

Creative Commons license: CC BY (attribution)