Also known as Ornithomimus type, Green Mountain

Where: Jefferson County, Colorado (39.7° N, 105.1° W: paleocoordinates 46.4° N, 81.3° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• supposedly same beds as Triceratops alticornis; the "Denver Beds"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by G. Cannon in 1889; reposited in the YPM

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

Primary reference: O. C. Marsh. 1890. Description of new dinosaurian reptiles. The American Journal of Science, series 3 39:81-86 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49000: authorized by Matthew Carrano, entered by Matthew Carrano on 05.04.2005

Creative Commons license: CC BY (attribution)