Also known as T. maximus type

Where: McCone County, Montana (47.7° N, 106.2° W: paleocoordinates 54.5° N, 78.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Hell Creek Formation, Maastrichtian (72.1 - 66.0 Ma)

• found in the "basal sandstones of the Hell Creek Beds"

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone

Size class: macrofossils

Collected by B. Brown & P. Kaisen in 1909; reposited in the AMNH

Collection methods: surface (float), surface (in situ), mechanical,

Primary reference: H. F. Osborn. 1910. Department of Vertebrate Palaeontology. Forty-First Annual Report of the American Museum of Natural History for the Year 1909 71-72 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35510: authorized by Matthew Carrano, entered by Matthew Carrano on 18.12.2003

Creative Commons license: CC BY (attribution)