Black Butte (UO 2352): Clarendonian, Oregon
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Rodentia
- Castoridae
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Eucastor malheurensis
Shotwell and Russell 1963
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Oregon | County: | Malheur |
| Coordinates: | 43.6° North, 117.5° West (view map) | ||||
| Paleocoordinates: | 44.2° North, 115.0° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5-6 | ||
| *Period: | Tertiary | ||
| Key time interval: | Clarendonian | ||
| Age range of interval: | 12.50000 - 9.40000 m.y. ago | ||
| Age estimate: | 12.5 to 9.5 Ma (unknown) | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Juntura | ||||
| Local section: | MlhrN | Local bed: | 2 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "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) | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 18828 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | B. Allen | Research group: | vertebrate |
| Created: | 1995-03-26 00:00:00 | Last modified: | 2023-07-29 08:40:44 |
| Access level: | the public | Released: | 1995-03-26 00:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 3119. | 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] |