Westend Blowout: Hemphillian, Oregon

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Sciuridae
Eutamias malloryi n. sp. Martin 1998
(7 measurements)
    = Neotamias malloryi Martin 1998
Martin 1998
UWBM A8803 DUPLICATE REF 2415 or 6090
Citellus shotwelli Black 1963
    = Spermophilus shotwelli Black 1963
Black 1963
"Citellus sp."
Mammalia - Rodentia - Heteromyidae
Perognathus stevei n. sp. Martin 1984
Martin 1984
UWBM A8803 DUPLICATE REF 2411 or 2424 (1 measurement)
Oregonomys pebblespringsensis Martin 1984
Martin 1984
UWBM A8803 DUPLICATE REF 2411 or 2424 (1 measurement)
Mammalia - Rodentia - Castoridae
Castor sp. Linnaeus 1758
Mammalia - Lagomorpha - Leporidae
Hypolagus sp. Dice 1917
    = Archaeolaginae indet.
Alroy 2002
Mammalia - Talpidae
Scapanus sp. Pomel 1848
    = Scapanus proceridens Hutchison 1968
Hutchison 1968
Mammalia - Perissodactyla - Rhinocerotidae
Teleoceras sp. Hatcher 1894
Mammalia - Perissodactyla - Equidae
Hipparionini indet. Quinn 1955
"hipparion horse": Shotwell 1961; misidentified "Pliohippus sp."
Mammalia - Tayassuidae
Prosthennops sp. Matthew and Gidley 1904
    = Tayassuinae indet. Palmer 1897
Alroy 2002
Mammalia - Camelidae
Camelidae indet. Gray 1821
large and small
Mammalia - Carnivora
Carnivora indet. Bowdich 1821
large
Mammalia - Carnivora - Procyonidae
Bassariscus sp. Coues 1887
    = Procyonidae indet. Gray 1825
Alroy 2002
Mammalia - Carnivora - Mustelidae
Plesiogulo marshalli (Martin 1928)
Harrison 1981
Pliotaxidea sp. Hall 1944
    = Pliotaxidea nevadensis Butterworth 1916
Wagner 1976
Mammalia - Carnivora - Ursidae
Ursidae indet. Gray 1825
Mammalia - Carnivora - Canidae
Canis davisi Merriam 1911
    = Eucyon davisi Merriam 1911
Gustafson 1978
"Canis sp."
Mammalia - Megalonychidae
Megalonyx sp. Harlan 1825
Hirschfeld and Webb 1968
"sloth"
Mammalia - Proboscidea - Mammutidae
Mammut sp. Blumenbach 1799
Mammut matthewi (Osborn 1921)
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% 43520J. 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]
10825% 42280C. 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]