Also known as USGS D856
Where: Moffat County, Colorado (40.6° N, 108.1° W: paleocoordinates 41.0° N, 106.4° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Browns Park Formation, Late/Upper Miocene (11.6 - 5.3 Ma)
• dates of 23.3 +/- 3.7 Ma FTz and "about 25" Ma KA biotite are from close to the base of the Fm.
•ash about 1 mi NW of D856 and 15 m topographically below it dated at 11.3 +/- 0.8 Ma by FTz; stratigraphic relationship unclear but presumably close
• group of beds-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Reposited in the USGS
Primary reference: J. G. Honey and G. A. Izett. 1988. Paleontology, taphonomy, and stratigraphy of the Browns Park Formation (Oligocene and Miocene) near Maybell, Moffat County, Colorado. United States Geological Survey Professional Paper 1358:1-52 [J. Alroy/J. Alroy/J. Ju]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 18846: authorized by John Alroy, entered by John Alroy on 27.09.1993
Creative Commons license: CC BY (attribution)
Taxonomic list
| Mammalia | |
|
Microtomarctus cf. conferta Matthew 1918 bone-crushing dog | |
|
cf. Protolabis sp. Cope 1876 camel
Michenia sp. Frick and Taylor 1971 camel | |
|
Merycodus warreni Leidy 1858 pronghorn
Merycodontinae indet. Matthew 1904 pronghorn | |
|
Megahippus sp. McGrew 1938 anchitheriine horse | |