Rock Springs Uplift (UW V-77014) (Paleocene of the United States)

Where: Sweetwater County, Wyoming (41.7° N, 109.0° W: paleocoordinates 47.7° N, 89.5° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Fort Union Formation, Tiffanian (61.7 - 56.8 Ma)

Environment/lithology: terrestrial

Reposited in the UW

Primary reference: G. F. Winterfeld. 1982. Mammalian paleontology of the Fort Union Formation (Paleocene), eastern Rock Springs Uplift, Sweetwater County, Wyoming. Contributions to Geology, University of Wyoming 21(1):73-112 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 14983: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

• Torrejonian according to Winterfeld but probably early Tiffanian: Thewissen 1990
Mammalia
 Cimolesta - Cimolestidae
Acmeodon cf. secans1 Matthew and Granger 1921 eutherian
 Primates - Paromomyidae
Paromomys depressidens Gidley 1923 primate
 Tribosphenida - Periptychidae
Anisonchus cf. sectorius Cope 1881 condylarth
 Tribosphenida - Phenacodontidae
Ectocion collinus2 Russell 1929 condylarth
 Macroscelidea - Apheliscidae
Litomylus dissentaneus Simpson 1935 elephant shrew
 Taeniodonta -
 Tribosphenida - Arctocyonidae
Chriacus pelvidens Cope 1881 condylarth