Where: Beaverhead County, Montana (45.0° N, 112.8° W: paleocoordinates 49.2° N, 98.5° W)
• coordinate based on political unit
When: Bridgerian (50.3 - 46.2 Ma)
• said to be early Bridgerian
• formation-level stratigraphic resolution
Environment/lithology: terrestrial
Primary reference: A. R. Tabrum, D. R. Prothero, and D. Garcia. 1996. Magnetostratigraphy and biostratigraphy of the Eocene-Oligocene transition, southwestern Montana. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 278-311 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 16401: authorized by John Alroy, entered by John Alroy on 12.04.1997
Creative Commons license: CC BY (attribution)
Taxonomic list
| Mammalia | |
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"Hyrachyus priscus n. sp." = Hyrachyus douglassi
"Hyrachyus priscus n. sp." = Hyrachyus douglassi Wood 1934 odd-toed ungulate falsely said by Wood 1934 to be from the same locality as what are now called the Dell beds, and not mentioned by Hough 1955
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Eotitanops sp. Osborn 1907 brontothere
Palaeosyops fontinalis Cope 1873 brontothere | |