Where: Niobrara County, Wyoming (43.1° N, 104.6° W: paleocoordinates 49.6° N, 79.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Lance Formation, Lancian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Collected by C. E. Beecher, J. B. Hatcher in 1890; reposited in the YPM

Collection methods: bulk, quarrying,

Primary reference: R. S. Lull. 1915. The mammals and horned dinosaurs of the Lance Formation of Niobrara County, Wyoming. The American Journal of Science, series 4 40(238):319-348 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14511: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)