Bitterroot Ranch (Eocene of the United States)
Where: Fremont County, Wyoming (43.2° N, 108.2° W)
• Paleocoordinates: 50.4° N, 84.1° W (Wright 2013)
• coordinate based on political unit
When: Aycross Formation, Bridgerian (50.5 - 46.2 Ma)
Environment/lithology: terrestrial
Primary reference: T. M. Bown. 1982. Geology, Paleontology, and Correlation of Eocene Volcaniclastic Rocks, Southeast Absaroka Range, Hot Springs County, Wyoming. United States Geological Survey Professional Paper 1201-A:A1-A75 [J. Alroy/J. Alroy/J. Marcot]more details
PaleoDB collection 16135: authorized by John Alroy, entered by John Alroy on 18.02.1993
Creative Commons license: CC0 (CC0)
Taxonomic list
• type area of Aycross Fm.
in the East Fork area, but correlation with Duncan Ranch levels is unclear
in the East Fork area, but correlation with Duncan Ranch levels is unclear
Show authors, comments, and common names
| Mammalia | |
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Phenacodontidae indet. Cope 1881 condylarth | |
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cf. Palaeosyops sp. Leidy 1870 brontothere "probably not P. fontinalis"; this appears to be the specimen of P. fontinalis mentioned by Stucky 1984c
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Hyrachyus cf. eximius Leidy 1871 odd-toed ungulate | |