Sand Creek (Orellan/Nebraska) (Oligocene of the United States)
Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.6° N, 95.7° W)
• coordinate based on political unit
When: Brule Formation (White River Group), Orellan (33.9 - 33.3 Ma)
Environment/lithology: terrestrial; lithology not reported
Size classes: macrofossils, mesofossils
Primary reference: J. Clark and J. R. Beerbower. 1967. Geology, paleoecology, and paleoclimatology of the Chadron Formation. Fieldiana 5(5):21-74 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 17175: authorized by John Alroy, entered by John Alroy on 18.10.1995, edited by Terri Cleary
Creative Commons license: CC BY (attribution)
Taxonomic list
• Brule "A" based on Schultz and Falkenbach 1956
just south of Round Top and perhaps equivalent to UNSM Sx-22
just south of Round Top and perhaps equivalent to UNSM Sx-22
Show authors, comments, and common names
| Mammalia | |
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Archaeotherium mortoni3 Leidy 1850 even-toed ungulate "lower Oreodon beds at the head of Sand Creek, Nebraska"; Gidley collection of 1896
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"Stenopsochoerus sternbergi" = Miniochoerus affinis2
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Hyracodon nebraskensis Leidy 1850 odd-toed ungulate CM specimen from "Orellan of Sand Creek, Sioux Co."
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| Reptilia | |
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Peltosaurus granulosus1 Cope 1873 squamates CM 1038, anterior portion of right dentary and fragment of left
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