Washita (Pleistocene of the United States)

Where: Washita County, Oklahoma (35.4° N, 98.7° W: paleocoordinates 35.4° N, 98.7° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• "bone samples from the site were radiocarbon dated... These samples yielded an average date of 16,350±190 years before present (YBP)"

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; gray, silty claystone

• "light gray, silty clay" including two beds

Size class: macrofossils

Collected in 1990, 1991, 1993, 1995, 1996

Collection methods: bulk, sieve,

Primary reference: H. Kirkland, Jr., M. Davis, J. Wood, D. Devine, and K. Giblet. 1997. Some Late Pleistocene Fossils from Washita Local Fauna. Proceedings of the Oklahoma Academy of Sciences 77:113-115 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 93178: authorized by John Alroy, entered by John Alroy on 06.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• "The matrix is also rich in gastropod shells"
 Rodentia - Cricetidae
Neotoma sp. Say and Ord 1825 pack rat
"compares favorably to N. floridana"
Arvicolinae indet. Gray 1821 vole
"either Synaptomys australis or Neofiber sp."
 Rodentia - Sciuridae
Cynomys ludovicianus Ord 1815 black-tailed prairie dog
 Rodentia - Geomyidae
Thomomys sp. Wied-Neuwied 1839 pocket gopher
Geomys sp. Rafinesque 1817 pocket gopher
 Lagomorpha - Leporidae
Sylvilagus sp. Gray 1867 cottontail rabbit
 Perissodactyla - Equidae
Equus excelsus Leidy 1858 horse
 Tribosphenida - Soricidae
cf. Sorex sp. Linnaeus 1758 long-tailed shrew
 Ungulata - Bovidae
"Bison occidentalis" = Bison antiquus, Bootherium bombifrons
"Bison occidentalis" = Bison antiquus Leidy 1852 bison
Bootherium bombifrons Harlan 1825 antelope