Black Butte (UO 2332) (Miocene of the United States)

Also known as Quarry 2, Kingsbury Gulch

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 (13.6 - 10.3 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: general faunal/floral analysis

PaleoDB collection 18816: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• NISP 55, excluding generically indeterminate specimens
Mammalia
 Carnivora - Canidae
Epicyon haydeni2 Leidy 1858 bone-crushing dog
 Perissodactyla - Equidae
Hippotherium sp.1 Kaup 1832 hipparionine horse
 Perissodactyla - Rhinocerotidae
Aphelops megalodus3 Cope 1873 rhinoceros
 Artiodactyla - Camelidae
Procamelus cf. grandis Gregory 1939 camel
 Rodentia - Castoridae
? Hystricops sp. Leidy 1858 beaver