Westend Blowout: Hemphillian, Oregon
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Rodentia
- Sciuridae
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Eutamias malloryi n. sp.
Martin 1998
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(7 measurements) | ||||||||||
= Neotamias malloryi
Martin 1998
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Martin 1998 | |||||||||
UWBM A8803 DUPLICATE REF 2415 or 6090 | ||||||||||
Citellus shotwelli
Black 1963
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= Spermophilus shotwelli
Black 1963
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Black 1963 | |||||||||
"Citellus sp." | ||||||||||
Mammalia
- Rodentia
- Heteromyidae
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Perognathus stevei n. sp.
Martin 1984
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Martin 1984 | |||||||||
UWBM A8803 DUPLICATE REF 2411 or 2424 (1 measurement) | ||||||||||
Oregonomys pebblespringsensis
Martin 1984
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Martin 1984 | |||||||||
UWBM A8803 DUPLICATE REF 2411 or 2424 (1 measurement) | ||||||||||
Mammalia
- Rodentia
- Castoridae
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Castor sp.
Linnaeus 1758
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Mammalia
- Lagomorpha
- Leporidae
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Hypolagus sp.
Dice 1917
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= Archaeolaginae indet.
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Alroy 2002 | |||||||||
Mammalia
- Talpidae
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Scapanus sp.
Pomel 1848
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= Scapanus proceridens
Hutchison 1968
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Hutchison 1968 | |||||||||
Mammalia
- Perissodactyla
- Rhinocerotidae
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Teleoceras sp.
Hatcher 1894
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Mammalia
- Perissodactyla
- Equidae
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Hipparionini indet.
Quinn 1955
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"hipparion horse": Shotwell 1961; misidentified "Pliohippus sp." | ||||||||||
Mammalia
- Tayassuidae
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Prosthennops sp.
Matthew and Gidley 1904
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= Tayassuinae indet.
Palmer 1897
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Alroy 2002 | |||||||||
Mammalia
- Camelidae
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Camelidae indet.
Gray 1821
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large and small | ||||||||||
Mammalia
- Carnivora
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Carnivora indet.
Bowdich 1821
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large | ||||||||||
Mammalia
- Carnivora
- Procyonidae
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Bassariscus sp.
Coues 1887
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= Procyonidae indet.
Gray 1825
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Alroy 2002 | |||||||||
Mammalia
- Carnivora
- Mustelidae
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Plesiogulo marshalli
(Martin 1928)
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Harrison 1981 | |||||||||
Pliotaxidea sp.
Hall 1944
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= Pliotaxidea nevadensis
Butterworth 1916
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Wagner 1976 | |||||||||
Mammalia
- Carnivora
- Ursidae
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Ursidae indet.
Gray 1825
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Mammalia
- Carnivora
- Canidae
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Canis davisi
Merriam 1911
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= Eucyon davisi
Merriam 1911
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Gustafson 1978 | |||||||||
"Canis sp." | ||||||||||
Mammalia
- Megalonychidae
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Megalonyx sp.
Harlan 1825
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Hirschfeld and Webb 1968 | |||||||||
"sloth" | ||||||||||
Mammalia
- Proboscidea
- Mammutidae
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Mammut sp.
Blumenbach 1799
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Mammut matthewi
(Osborn 1921)
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von Koenigswald et al. 2023 | |||||||||
see common names |
Geography
Country: | United States | State/province: | Oregon | County: | Morrow |
Coordinates: | 45.8° North, 119.3° West (view map) | ||||
Paleocoordinates: | 45.8° North, 116.6° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | outcrop |
Time
Period: | Neogene | ||
10 m.y. bin: | Cenozoic 6 | ||
*Period: | Tertiary | *Epoch: | Miocene |
Key time interval: | Hemphillian | ||
Age range of interval: | 10.30000 - 4.90000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Alkali Canyon | ||||
Stratigraphic resolution: | member | ||||
Stratigraphy comments: "relatively thin stratigraphic unit"; see Martin 1998 for stratigraphic nomenclature |
Lithology and environment
Primary lithology: | tuffaceous unlithified sandstone |
Secondary lithology: | tuff |
Lithology description: "unconsolidated sands, tuffaceous sandstone and tuffs" | |
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection excludes: | species names |
Collection methods: | surface (float),field collection |
Reason for describing collection: | paleoecologic analysis |
Museum repositories: | SDSM |
Collection method comments: collection on hands and knees" from a blowout |
Metadata
Also known as: | Ordnance; SDSM V801; UO 2349; UWBM A8803 | ||
Database number: | 19116 | ||
Authorizer: | J. Alroy, N. Famoso | Enterer: | J. Alroy, N. Famoso |
Modifier: | J. Alroy | Research group: | vertebrate |
Created: | 1993-09-27 00:00:00 | Last modified: | 2004-03-22 18:48:24 |
Access level: | the public | Released: | 1993-09-27 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
3110. | 5% 43520 | J. A. Shotwell. 1958. Inter-community relationships in Hemphillian (mid-Pliocene) mammals. Ecology 39(2):271-282 [J. Alroy/J. Alroy/W. Clyde] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
1082 | 5% 42280 | C. C. Black. 1963. A review of the North American Tertiary Sciuridae. Bulletin of the Museum of Comparative Zoology 130(3):109-248 [J. Alroy/J. Alroy/J. Head] |
1751 | E. P. Gustafson. 1978. The Vertebrate Faunas of the Pliocene Ringold Formation, South-Central Washington. Bulletin of the Museum of Natural History, University of Oregon 23:1-62 [J. Alroy/J. Alroy/J. Marcot] | |
1799 | J. A. Harrison. 1981. A review of the extinct wolverine, Plesiogulo (Carnivora: Mustelidae), from North America. Smithsonian Contributions to Paleobiology 46:1-27 [J. Alroy/J. Alroy/J. Alroy] | |
1919 | S. E. Hirschfeld and S. D. Webb. 1968. Plio-Pleistocene Megalonychid Sloths of North America. Bulletin of the Florida State Museum 12(5) [J. Alroy/J. Alroy/J. Ju] | |
1989 | J. H. Hutchison. 1968. Fossil Talpidae (Insectivora, Mammalia) from the Tertiary of Oregon. Bulletin of the Museum of Natural History, University of Oregon 11:1-117 [J. Alroy/J. Alroy/M. Uhen] | |
2411 | J. E. Martin. 1984. A Survey of Tertiary Species of Perognathus (Perognathinae) and a description of a new genus of Heteromyinae,. In R. M. Mengle (ed.), Carnegie Museum of Natural History Special Publication 9:90-121 [J. Alroy/J. Alroy/M. Uhen] | |
2415 | J. E. Martin. 1998. Two new sciurids, Eutamias malloryi and Parapaenemarmota (Rodentia), from the late Miocene (Hemphillian) of northern Oregon. Thomas Burke Memorial Washington State Museum Research Report 6:31-42 [J. Alroy/J. Alroy] | |
85881 | W. von Koenigswald, C. Widga, and U. Göhlich. 2023. New mammutids (Proboscidea) from the Clarendonian and Hemphillian of Oregon – a survey of Mio-Pliocene mammutids from North America. Bulletin of the Museum of Natural History, University of Oregon 30:1-63 [N. Famoso/N. Famoso] | |
6332 | H. Wagner. 1976. A new species of Pliotaxidea (Mustelidae; Carnivora) from California. Journal of Paleontology 50(1):107-127 [J. Alroy/J. Alroy/J. Alroy] |