Where: Montana (46.9° N, 110.6° W: paleocoordinates 54.5° N, 83.9° W)

When: Hell Creek Formation, Maastrichtian (72.1 - 66.0 Ma)

Environment/lithology: terrestrial; phosphatic lithology not reported

Size class: macrofossils

Primary reference: R. E. Barrick and W. J. Showers. 1994. Thermophysiology of Tyrannosaurus rex; evidence from oxygen isotopes . Science 265(5169):222-224 [M. Uhen/S. Alam]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 152248: authorized by Mark Uhen, entered by Shahed Alam on 12.11.2013

Creative Commons license: CC BY (attribution)