Where: Montana (47.5° N, 107.2° W: paleocoordinates 54.5° N, 79.7° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; gray sandstone

Size class: macrofossils

Preservation: mold/impression

Collected by H. Garbani in the 1960s; reposited in the LACM

Collection methods: quarrying, mechanical,

Primary reference: W. J. Morris. 1970. Hadrosaurian dinosaur bills—morphology and function. Los Angeles County Museum Contributions in Science 193:1-14 [M. Carrano/K. Maguire/M. Carrano]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 55385: authorized by Matthew Carrano, entered by Kaitlin Maguire on 13.10.2005

Creative Commons license: CC BY (attribution)