Also known as T. obtusus type site

Where: Niobrara County, Wyoming (43.2° N, 104.6° W: paleocoordinates 49.6° N, 79.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Lance Formation, Maastrichtian (70.6 - 65.5 Ma)

• "about the middle of the Laramie"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by J. B. Hatcher; reposited in the USNM

Collection methods: quarrying, mechanical,

Primary reference: J. B. Hatcher, O. C. Marsh, and R. S. Lull. 1907. The Ceratopsia. Monographs of the United States Geological Survey 49:1-198 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 46131: authorized by Matt Carrano, entered by Matt Carrano on 04.01.2005