Krebs Ranch 1: Hemphillian, Oregon

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Talpidae
Hutchison 1968
from both UO 2322 and CIT 375
Mammalia - Carnivora - Canidae
2 specimens
    = Canini indet. Fischer de Waldheim 1817
Alroy 2002
Mammalia - Tayassuidae
1 specimen
    = Tayassuinae indet. Palmer 1897
Alroy 2002
Mammalia - Lagomorpha - Leporidae
White 1988
CIT specimen from "Arlington" (presumably CIT 375)
Mammalia - Rodentia - Sciuridae
Martin 1998
Arlington 5, 7, 13, 14 DUPLICATE REF 2415 or 6090
Black 1963
"Arlington beds" (presumably CIT 375); this record or the next one might include "Citellus sp." of Shotwell from UO 2322
Black 1963
CIT 375
Mammalia - Rodentia - Castoridae
Dipoides sp. Jaeger 1835
Dipoides cf. wilsoni Hibbard 1949
Martin 2008
Mammalia - Rodentia - Heteromyidae
Oregonomys pebblespringsensis n. sp. Martin 1984
Martin 1984
UWBM C0127 (Arlington 14); also B1532 (Arlington 3), B1533 (Arlington 4), B1534 (Arlington 5), C0120 (Arlington 7), C0121 (Arlington 8), C0125 (Arlington 12), C0126 (Arlington 13), C0141 (Arlington 15) DUPLICATE REF 2411 or 2424
Martin 1984
UWBM B1532 (Arlington 3), B1533 (Arlington 4), B1534 (Arlington 5), C0120 (Arlington 7), C0125 (Arlington 12), C0126 (Arlington 13), C0127 (Arlington 14), C0141 (Arlington 15) DUPLICATE REF 2411 or 2424
Mammalia - Rodentia - Cricetidae
Peromyscus sp. Gloger 1841
2 specimens
    = Cricetidae indet. Fischer von Waldheim 1817
Alroy 2002
see common names

Geography
Country:United States State/province:Oregon County:Gilliam
Coordinates: 45.7° North, 120.2° West (view map)
Paleocoordinates:47.5° North, 116.4° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Neogene
10 m.y. bin: Cenozoic 6
*Period:Tertiary *Epoch:Miocene
Key time interval: Hemphillian
Age range of interval: 9.4 - 4.7 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
Collection size:86 specimens
Reason for describing collection:paleoecologic analysis
Collection method comments: "collection on hands and knees" from a blowout
Taxonomic list comments:CIT 375 is at the junction of four sections, of which one includes UO 2322, so the records are merged
a UO specimen of Megalonyx sp. is from one of the Krebs Ranch localities: Hirschfeld and Webb 1968
NISP 86, excluding 5 generically indeterminate records
Metadata
Also known as:Arlington 15; UO 2322
Database number:18939
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:2025-02-22 15:12:02
Access level:the public Released:1993-09-27 00:00:00
Creative Commons license:CC0
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]
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]
90166 J. E. Martin. 2008. Hemphillian rodents from northern Oregon and their biostratigraphic implications. Paludicola 6(4):155-190 [N. Famoso/N. Famoso]
3632 J. A. White. 1988. The Archaeolaginae (Mammalia, Lagomorpha) of North America, Excluding Archaeolagus and Panolax. Journal of Vertebrate Paleontology 7(4):425-450 [J. Alroy/J. Alroy/J. Ju]