Also known as UCMP V-72211

Where: Garfield County, Montana (47.6° N, 107.3° W: paleocoordinates 54.0° N, 82.2° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Hell Creek Formation, Puercan (66.0 - 63.3 Ma)

• paleomagnetic sections are given by Archibald et al. 1982 and Swisher et al. 1995 but are not very helpful because the locality is from a channel sandstone deeply incised into the formation

• bed-level stratigraphic resolution

Environment/lithology: coarse channel fill; sandstone

Size class: mesofossils

Reposited in the UCMP

Collection methods: bulk, surface (float), sieve,

Primary reference: J. D. Archibald. 1982. A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana. University of California Publications in Geological Sciences 122:1-286 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 108198: authorized by John Alroy, entered by John Alroy on 25.04.2011, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)