Swallow Quarry (Miocene of the United States)

Also known as UNSM Cr-16

Where: Cherry County, Nebraska (42.8° N, 100.8° W: paleocoordinates 43.3° N, 98.2° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Burge Member (Valentine Formation), Clarendonian (12.5 - 9.4 Ma)

Environment/lithology: terrestrial

Reposited in the UNSM

Primary reference: M. F. Skinner and F. W. Johnson. 1984. Tertiary stratigraphy and the Frick Collection of fossil vertebrates from north-central Nebraska. Bulletin of the American Museum of Natural History 178(3):1-368 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 18414: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• underlies Swallow Ash, dated at 10.6 +/- 0.2 Ma FT glass according to Skinner and Johnson 1984
141 F:AM and UNSM specimens: Skinner and Johnson 1984
Show authors, comments, and common names
Mammalia
 Carnivora - Canidae
Aelurodon stirtoni3
Aelurodon stirtoni3 Wang et al. 1999 bone-crushing dog
 Artiodactyla - Antilocapridae
Cosoryx furcatus1
Cosoryx furcatus1 Leidy 1869 pronghorn
 Perissodactyla - Equidae
Pseudhipparion retrusum2
Pseudhipparion retrusum2 Cope 1889 hipparionine horse
Supplemental Table S1
1Frick 1937; 2Mihlbachler et al. 2011; 3Wang et al. 1999