Where: Slope County, North Dakota (46.4° N, 103.3° W: paleocoordinates 47.2° N, 96.4° W)

• coordinate based on political unit

When: Arikaree Formation, Whitneyan to Whitneyan (33.3 - 24.8 Ma)

• said to be Whitneyan to early Arikareean = Geringian or Monroecreekian

Environment/lithology: terrestrial

Primary reference: J. W. Hoganson, E. C. Murphy, and N. F. Forsman. 1998. Chadron, Brule, and Arikaree Formations, North Dakota. In D. O. Terry, H. E. LaGarry, R. M. Hunt Jr. (eds.), Geological Society of America Special Paper: Depositional Environments, Lithostratigraphy, and Biostratigraphy of the White River and Arikaree Groups (Late Eocene to Early Miocene, North America) 325:185-196 [J. Alroy/J. Alroy/T. Cleary]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 17330: authorized by John Alroy, entered by John Alroy on 13.10.1999

Creative Commons license: CC BY (attribution)