Where: Adams County, Colorado (39.8° N, 105.2° W: paleocoordinates 46.6° N, 80.9° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Arapahoe Formation, Maastrichtian (72.1 - 66.0 Ma)

• basal within formation

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; conglomerate

Size class: macrofossils

Collected by E. R. Lloyd & C. W. Henderson in the 1920s; reposited in the DMNH

Collection methods: surface (in situ),

Primary reference: J. H. Johnson. 1931. The paleontology of the Denver quadrangle, Colorado. Colorado Scientific Society, Proceedings 12(11):355-378 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 143525: authorized by Philip Mannion, entered by Jonathan Tennant on 24.04.2013, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)