Where: Emmons County, North Dakota (46.0° N, 100.4° W: paleocoordinates 46.0° N, 100.4° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Late/Upper Pleistocene (0.1 - 0.0 Ma)
• "very thin and discontinuous late Wisconsinan glacial drift, including river sediments, overlies the Cretaceous Pierre Formation at this site... [the specimen] was found totally exposed on the Lake Oahe beach associated with modern bison and other bones and cultural artifacts weathering out of an Extended Middle Missouri Tradition variant village archeological site referred to as the Havens site... An accelerator mass spectrometer age of 11, 915 ± 40 years ago (CAMS-87696) was established for highly purified bone collagen from the specimen"
Environment/lithology: glacial; lithology not reported
Size class: macrofossils
Collected by L. Vannurden, D. Vannurden in 1999
Collection methods: surface (float),
• North Dakota State Fossil Collection
•"found as float"
Primary reference: J. W. Hoganson and H. G. McDonald. 2007. First report of Jefferson's ground sloth (Megalonyx jeffersonii) in North Dakota: Paleobiogeographical and paleoecological significance. Journal of Mammalogy 88(1):73-80 [J. Alroy/J. Alroy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 93268: authorized by John Alroy, entered by John Alroy on 11.01.2010
Creative Commons license: CC BY (attribution)