Where: Alberta, Canada (49.6° N, 114.1° W: paleocoordinates 57.6° N, 87.1° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone

Size class: macrofossils

Collected by J. Baker, P. J. Currie in 1980–1982; reposited in the TMP

Collection methods: surface (in situ), mechanical,

• originally discovered by high school students

Primary reference: R. E. Molnar. 1991. The cranial morphology of Tyrannosaurus rex. Palaeontographica Abteilung A 217(4-6):137-176 [M. Carrano/M. Carrano]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 157188: authorized by Matthew Carrano, entered by Matthew Carrano on 06.06.2014

Creative Commons license: CC BY (attribution)