Chalk Bluffs (Oligocene of the United States)
Where: Weld County County, Colorado (40.9° N, 104.9° W: paleocoordinates 42.2° N, 97.0° W)
• coordinate based on political unit
When: Oreodon beds zone, White River Formation, Orellan (33.9 - 33.3 Ma)
• "Oreodon Beds"
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Primary reference: A. H. Miller and C. G. Sibley. 1942. An Oligocene hawk from Colorado. The Condor 44(1):39-40 [J. Hunter/J. Hunter/J. Hunter]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 13296: authorized by John Hunter, entered by John Hunter on 18.02.2002, edited by Roger Benson
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Aves | |
Buteo fluviaticus n. sp.
Buteo fluviaticus n. sp. Miller and Sibley 1942 hawk | |
| Reptilia | |
Aciprion majus n. sp.
| |