Where: Bowman County, North Dakota (46.2° N, 103.8° W: paleocoordinates 52.4° N, 77.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Hell Creek Formation, Maastrichtian (70.6 - 65.5 Ma)

• datum -9.00, K-T section 86148

• bed-level stratigraphic resolution

Environment/lithology: "channel"; sandy siltstone

Size class: macrofossils

Primary reference: D. A. Pearson, T. Schaefer, K. R. Johnson, D. J. Nichols, and J. P. Hunter. 2002. Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota. In J. H. Hartman, J. R. Johnson, and D. J. Nichols (eds.), The Hell Creek Formation and the Cretaceous-Tertiary Boundary in the Northern Great Plains: An Integrated Continental Record of the End of the Cretaceous, Geological Society of America Special Paper 361:145-167 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 45132: authorized by Matt Carrano, entered by Matt Carrano on 06.10.2004