Also known as South Platte River

Where: Jefferson County, Colorado (39.7° N, 105.0° W: paleocoordinates 46.4° N, 81.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Denver Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• lower levels exposed in pit

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; claystone

Size class: macrofossils

Collected by R. Brown in 1943

Collection methods: surface (in situ),

Primary reference: R. W. Brown. 1943. Cretaceous-Tertiary boundary in the Denver Basin, Colorado. Bulletin of the Geological Society of America 54:65-86 [M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 191369: authorized by Matthew Carrano, entered by Matthew Carrano on 24.01.2018

Creative Commons license: CC BY (attribution)