Ravine South of Fairfield Creek (Pleistocene of the United States)

Also known as UNSM Bw-109

Where: Brown County, Nebraska (42.8° N, 100.1° W: paleocoordinates 42.8° N, 100.1° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• "late Pleistocene (Rancholabrean)... The fossiliferous stratum lies 15 m above the base and 5 m below the exposed top of an unnamed Pleistocene terrace deposit"

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; unlithified sandstone

• "probably deposited under full glacial conditions"
• "unlithified sand and gravel"

Size class: macrofossils

Collected by R. Evander, K. Seevers, K. Terrell in 1980; reposited in the UNSM

Collection methods: surface (in situ),

• "collected in situ"

Primary reference: M. R. Voorhies. 1981. A fossil record of the porcupine (Erethizon dorsatum) from the Great Plains. Journal of Mammalogy 62(4):835-837 [J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 93179: authorized by John Alroy, entered by John Alroy on 06.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• some taxa may be omitted
Mammalia
 Artiodactyla - Bovidae
Bison sp. Hamilton-Smith 1827 bison
"a late species"
 Rodentia - Sciuridae
"Spermophilus richardsonii" = Urocitellus richardsonii
"Spermophilus richardsonii" = Urocitellus richardsonii Sabine 1822 Holarctic ground squirrel
 Rodentia - Erethizontidae
Erethizon dorsatum Linnaeus 1758 North American porcupine
 Rodentia - Cricetidae
Phenacomys cf. intermedius Merriam 1889 western heather vole
Ondatra zibethicus Linnaeus 1766 muskrat
Dicrostonyx torquatus Pallas 1778 Arctic lemming