Where: Niobrara County, Wyoming (43.6° N, 103.2° W: paleocoordinates 49.3° N, 70.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Baculites scotti ammonoid zone, Red Bird Silty Member (Pierre Shale Formation), Campanian (83.6 - 72.1 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, concretionary, brown, gray, silty, calcareous shale and gray limestone

Size classes: macrofossils, mesofossils

Reposited in the USGS, USNM

Collection methods: mechanical,

Primary reference: W. A. Cobban and W. J. Kennedy. 1993. The Upper Cretaceous dimorphic pachydiscid ammonite Menuites in the Western Interior of the United States. United States Geological Survey Professional Paper 1533:1-14 [P. Wagner/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 232172: authorized by Pete Wagner, entered by Pete Wagner on 28.10.2023

Creative Commons license: CC BY (attribution)