Where: McCone County, Montana (47.6° N, 106.2° W: paleocoordinates 54.2° N, 79.2° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; brown, green mudstone

Size class: macrofossils

Collected by W. Thompson in 1984; reposited in the UCMP

Collection methods: surface (in situ),

Primary reference: M. B. Goodwin and J. R. Horner. 1997. Morphological variation and ontogeny in the skull of Triceratops. Journal of Vertebrate Paleontology 17(3, suppl.):49A [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 55354: authorized by Matthew Carrano, entered by Matthew Carrano on 11.10.2005

Creative Commons license: CC BY (attribution)