Where: Big Horn County, Wyoming (44.5° N, 108.0° W: paleocoordinates 49.7° N, 89.2° W)
• coordinate based on political unit
When: Clarkforkian (56.2 - 54.9 Ma)
• Fort Union (earlier literature referred to this as the 'Polecat Bench Formation') or Willwood Formation
Environment/lithology: terrestrial; lithology not reported
Size classes: macrofossils, mesofossils
Primary reference: K. D. Rose. 1981. The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary. University of Michigan Papers on Paleontology 26:1-197 [J. Alroy/J. Alroy/P. Mannion]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 15083: authorized by John Alroy, entered by John Alroy on 18.02.1993
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Paramys sp. Leidy 1871 rodent | |
cf. Thryptacodon antiquus Matthew and Granger 1915 condylarth | |
Phenacodontidae indet. Cope 1881 condylarth
Ectocion osbornianus Cope 1882 condylarth | |
Coryphodon sp. Owen 1845 pantodont | |
Ectoganus lobdelli Simpson 1929 taeniodont |