Where: Carter County, Montana (45.9° N, 104.9° W: paleocoordinates 52.3° N, 78.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• ca. 61 m below Hell Creek-Fort Union contact (approx. K/T boundary), within Toe Bone Channelbelt

• bed-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; lithology not reported

Size class: mesofossils

Collected by W. Coombs, D. Archibald, R. Cifelli in 1980s-2002; reposited in the UCMP

Collection methods: bulk, sieve,

Primary reference: J. D. Archibald, Y. Zhang, T. Harper and R. L. Cifelli. 2011. Protungulatum, confirmed Cretaceous occurrence of an otherwise Paleocene eutherian (placental?) mammal. Journal of Mammalian Evolution 18:153-161 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 110464: authorized by Matthew Carrano, entered by Matthew Carrano on 09.06.2011

Creative Commons license: CC BY (attribution)