Where: Rio Blanco County, Colorado (40.0° N, 108.8° W: paleocoordinates 47.5° N, 80.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Williams Fork Formation, Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)

• correlated to between the Baculites baculus and Exiteloceras jennyi ammonite zones

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by D. Hammond in 1985

Collection methods: quarrying, mechanical,

Primary reference: S. Diem and J. D. Archibald. 2005. Range extension of southern chasmosaurine ceratopsian dinosaurs into northwestern Colorado. Journal of Paleontology 79(2):251-258 [M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 76715: authorized by Matthew Carrano, entered by Matthew Carrano on 29.11.2007

Creative Commons license: CC BY (attribution)