Split Rock (UCMP V-77151) (Miocene of the United States)

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 19083: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Carnivora - Canidae
Borophaginae indet.1 Simpson 1945 bone-crushing dog
 Perissodactyla - Equidae
Merychippus primus Osborn 1918 horse
 Artiodactyla - Merycoidodontidae
"Brachycrus sweetwaterensis" = Brachycrus laticeps
"Brachycrus sweetwaterensis" = Brachycrus laticeps Douglass 1900 oreodont
 Artiodactyla - Antilocapridae
Antilocapridae indet. Gray 1866 pronghorn
 Artiodactyla - Camelidae
Reptilia
 Testudines - Testudinidae
Testudinidae indet.2 Batsch 1788 turtle