Where: McCone County, Montana (47.7° N, 106.2° W: paleocoordinates 54.3° N, 79.2° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Hell Creek Formation, Maastrichtian (70.6 - 65.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial

Size class: macrofossils

Reposited in the UCMP

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 55355: authorized by Matt Carrano, entered by Matt Carrano on 11.10.2005