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
Collection methods: bulk, sieve
Primary reference: J. A. Shotwell. 1970. Pliocene mammals of southeast Oregon and adjacent Idaho. Bulletin of the Museum of Natural History, University of Oregon 17:1-103 [J. Alroy/J. Alroy/J. Marcot]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 18831: authorized by John Alroy, entered by John Alroy on 18.02.1993
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
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Tardontia cf. occidentale Macdonald 1956 mountain beaver | |
Macrognathomys nanus Hall 1930 jumping mouse | |
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Eucastor malheurensis Shotwell and Russell 1963 beaver | |
Pliosaccomys sp. Wilson 1936 pocket gopher | |
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Leptodontomys sp. Shotwell 1956 rodent | |
Hypolagus cf. fontinalis Dawson 1958 rabbit | |
Hesperolagomys cf. galbreathi Clark et al. 1964 pika | |
Scapanus cf. shultzi Tedford 1961 mole
Mystipterus sp. Hall 1930 mole | |
"Crusafontina minima" = Anouroneomys minimus2
"Crusafontina minima" = Anouroneomys minimus2 Hutchison and Bown 1980 red-toothed shrew this or UO 2337 is the type locality
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Sthenictis sp. Peterson 1910 mustelid carnivore
? Martes sp. Frisch 1775 marten |