Where: Natrona County, Wyoming (43.2° N, 107.1° W: paleocoordinates 44.0° N, 103.2° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Arikaree Formation, Hemingfordian (20.4 - 16.0 Ma)
Environment/lithology: eolian
Size class: macrofossils
Reposited in the UCMP
Primary reference: J. Munthe. 1988. Miocene mammals of the Split Rock area, Granite Mountains basin, central Wyoming. University of California Publications in Geological Sciences 126:1-136 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 18873: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Patricia Holroyd
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Testudinidae indet. Batsch 1788 turtle | |
Mammalia | |
Rodentia indet. Bowdich 1821 rodent | |
"Tomarctus optatus" = Protomarctus optatus
"Tomarctus optatus" = Protomarctus optatus Matthew 1924 bone-crushing dog confirmed by Wang et al. 1999
| |
"Brachycrus sweetwaterensis" = Brachycrus laticeps
"Brachycrus sweetwaterensis" = Brachycrus laticeps Douglass 1900 oreodont | |
Antilocapridae indet. Gray 1866 pronghorn
Cosoryx (Paracosoryx) wilsoni Frick 1937 pronghorn | |
Protolabis cf. heterodontus Cope 1874 camel | |
Merychippus primus Osborn 1918 horse |