PTRM V95018, Cannonball Creek (Cretaceous of the United States)

Where: Slope County, North Dakota (46.5° N, 104.0° W: paleocoordinates 52.9° N, 77.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Hell Creek Formation, Maastrichtian (72.1 - 66.0 Ma)

• datum -21.30, K-T section 9612

•"23.44 m below the pollen-defined" K/T boundary according to Knauss et al. 2010

• group of beds-level stratigraphic resolution

Environment/lithology: "channel"; muddy sandstone

• "a meander channel preserved as a series of stacked sandstone deposits" (Knauss et al. 2010)
• "large sets of cross-bedding [sandstone] overlain by a horizon of iron-stained planar sandstone with abundant non-armored mud ball inclusions... in contact with the uppermost sandstone, again planar in nature, but containing abundant lignitic clasts and macerated carbonaceous materials" with most fossils coming from the middle unit

Size class: macrofossils

Collected in 1996 - 2000

• PTRM collection

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 45298: authorized by Matthew Carrano, entered by Matthew Carrano on 19.10.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• "ceratopsid" remains are also present (Knauss et al. 2010)
Show authors, comments, and common names
Reptilia
 Ornithischia - Hadrosauridae
Hadrosaurinae indet.
Hadrosaurinae indet. Lambe 1918 hadrosaurine
associated skeleton