Where: Carter County, Montana (45.8° N, 104.9° W: paleocoordinates 52.2° N, 78.7° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by W. J. Gwilliam in 1967; reposited in the USGS, USNM

Collection methods: surface (float),

Primary reference: E. B. Giffin. 1989. Notes on pachycephalosaurs (Ornithischia). Journal of Paleontology 63(4):525-529 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 161171: authorized by Matthew Carrano, entered by Matthew Carrano on 02.09.2014

Creative Commons license: CC BY (attribution)