Where: Grand County, Colorado (40.2° N, 106.4° W: paleocoordinates 47.0° N, 76.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Baculites cuneatus ammonoid zone, Pierre Shale Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• 4-6 m above D1352

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary siltstone

Size class: macrofossils

Collected by G.R. Scott, W.A. Cobban in 1957; reposited in the USNM

Primary reference: W. J. Kennedy, W. A. Cobban, and G. R. Scott. 2000. Heteromorph ammonites from the Upper Campanian (Upper Cretaceous) Baculites cuneatus and Baculites reesidei zones of the Pierre Shale in Colorado, USA. Acta Geologica Polonica 50:1-20 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 178537: authorized by Matthew Clapham, entered by Matthew Clapham on 06.05.2016

Creative Commons license: CC BY (attribution)