Also known as Missouri River, Blackfeet

Where: Carter County, Montana (45.1° N, 104.9° W: paleocoordinates 51.6° N, 79.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Lance Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by F. V. Hayden in pre-1867

Collection methods: surface (float),

• exact date unknown, prior to 1867 likely because specimens would otherwise have been sent to the Smithsonian

Primary reference: J. Leidy. 1872. Remarks on some extinct vertebrates. Proceedings of the Academy of Natural Sciences of Philadelphia 24(1):38-40 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91359: authorized by Matthew Carrano, entered by Matthew Carrano on 16.09.2009

Creative Commons license: CC BY (attribution)