Where: Grant County, North Dakota (46.3° N, 101.6° W: paleocoordinates 51.0° N, 79.5° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Cannonball Formation, Paleocene (65.5 - 55.8 Ma)
• formation-level stratigraphic resolution
Environment/lithology: marine; gray, sandy mudstone
•Toa-5 '
•gray, poorly consolidated, sandy mudstone' and its contained dark gray limestone
•concretions in middle of section, and from poorly consolidated, very fine to
•finegrained sandstone
Size class: macrofossils
Primary reference: A. M. Cvancara. 1966. Revision of the fauna of the Cannonball Formation (Paleocene) of North and South Dakota. Contributions from the Museum of Paleontology The University of Michigan 20(10):1-97 [M. Uhen/M. Uhen] more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 121280: authorized by Mark Uhen, entered by Mark Uhen on 01.12.2011