PBDB Collection

Little Valley (UO 2516): Hemphillian, Oregon

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Mammalia - Chiroptera - Vespertilionidae

	? Vespertilionidae indet. Gray 1821
	a bat
Mammalia - Lagomorpha - Leporidae

	Hypolagus vetus (Kellogg 1910)
Mammalia - Rodentia - Cricetidae

	Peromyscus cf. pliocenicus Wilson 1937

	Peromyscus esmeraldensis (Clark et al. 1964)
	= Copemys cf. esmeraldensis Clark et al. 1964	Alroy 2002

	Peromyscus antiquus Kellogg 1910

	Peromyscus valensis Shotwell 1967
	(6 measurements)
	= Antecalomys valensis Shotwell 1967	Alroy 2002

	Microtoscoptes disjunctus (Wilson 1937)
	= Goniodontomys disjunctus Wilson 1937	Alroy 2002
Mammalia - Rodentia - Castoridae

	Dipoides vallicula Shotwell 1970
	(5 measurements)
Mammalia - Rodentia - Heteromyidae

	Pliosaccomys cf. magnus (Kellogg 1910)

	Diprionomys parvus Kellogg 1910

	Perognathus sp. Maximillian 1839
	= Perognathinae indet. Coues 1875	Alroy 2002
Mammalia - Rodentia - Sciuridae

	Spermophilus sp. Cuvier 1825
	two forms, "A" and "B"
Mammalia - Talpidae

	Scapanus proceridens Hutchison 1968
Mammalia - Soricidae

	Soricidae indet. Fischer 1814
Mammalia - Carnivora - Canidae

	Canis davisi Merriam 1911
	= Eucyon davisi Merriam 1911	Alroy 2002
Mammalia - Carnivora - Mustelidae

	Plionictis oregonensis (Shotwell 1970)
see common names

Geography

Country:	United States	State/province:	Oregon	County:	Malheur
Coordinates:	43.6° North, 117.5° West (view map)
Paleocoordinates:	45.4° North, 113.6° West (Wright 2013)
Basis of coordinate:	based on political unit
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:	Chalk Butte
Local section:	MlhrE	Local bed:	3
Local order:	bottom to top

Lithology and environment

Environment:

terrestrial indet.

Taphonomy

Modes of preservation:

body

Collection methods and comments

Collection methods:	bulk,sieve
Reason for describing collection:	taxonomic analysis

Metadata

Database number:	18944
Authorizer:	J. Alroy	Enterer:	J. Alroy
Modifier:	J. Alroy	Research group:	vertebrate
Created:	1993-02-18 00:00:00	Last modified:	2025-02-22 15:12:02
Access level:	the public	Released:	1993-02-18 00:00:00
Creative Commons license:	CC0

Reference information

Primary reference:

3118.

J. A. Shotwell. 1970. Pliocene mammals of southeast Oregon and adjacent Idaho. Bulletin of the Museum of Natural History, University of Oregon 17:1-103 [J. Alroy/J. Alroy/J. Marcot]

Secondary references:

6294

J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]