Gregg Ranch Site (Pleistocene of the United States)

Also known as Elm Creek

Where: Beaver County, Oklahoma (36.8° N, 100.7° W: paleocoordinates 36.8° N, 100.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• "shell from [this site] was dated... (1990) 11,630 +/- 90 YBP"

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; claystone and sandstone

• deposits in general area consist of "Irregularly stratified dark clay, sand and gravel"

Size class: mesofossils

Collected by Dalquest and Baskin in 1990

Collection methods: bulk, sieve,

Primary reference: W. W. Dalquest and J. A. Baskin. 1992. Mammals of the Elm Creek Local Fauna, Late Pleistocene of Beaver County, Oklahoma. American Midland Naturalist 127:13-20 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 74145: authorized by John Alroy, entered by John Alroy on 24.07.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Artiodactyla - Camelidae
Camelops sp. Leidy 1854 camel
 Theriamorpha - Soricidae
Sorex palustris Richardson 1828 American water shrew
 Rodentia - Cricetidae
Ondatra zibethicus Linnaeus 1766 muskrat
Microtus pennsylvanicus Ord 1815 meadow vole
 Rodentia - Sciuridae
"Spermophilus franklinii" = Poliocitellus franklinii Sabine 1822 Franklin's gruond squirrel
Tamias striatus Linnaeus 1758 eastern chipmunk
Cynomys ludovicianus Ord 1815 black-tailed prairie dog
 Rodentia - Geomyidae
Geomys bursarius Shaw 1800 plains pocket gopher
Thomomys talpoides Richardson 1828 northern pocket gopher