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Brown Expedition to the Cretaceous of Montana (1902-1910)



Starting in 1902, Barnum Brown led a series of expeditions in the Cretaceous and Laramie of Montana. Most notably, Brown discovered portions of vertebrae found together which Henry Fairfield Osborn later described as the "type of the new genus Tyrannosaurus, in reference to its size, which greatly exceeds that of any carnivorous land animal hitherto described." [1] T. rex (AMNH 973) was one of many specimens Brown helped to procure for the Museum from his explorations in and around the Hell Creek beds in Montana from 1902-1910. Brown also found fossils of Triceratops (AMNH 970 and 971), Trachodon, Morosaur, Plesiosaur, as well as rhynchocephalian and crocodylian skeletons. Richard S. Lull assisted in 1902. Other assistants and teamsters in the following years included: L. R. Parkin, Mert Stockwell, Peter Kaisen, Edward Triel, C. H. Lambert, A. E. Davenport, and Al Ladonnet.

The expedition did not take place in 1907. In 1909, after his work in Montana, Brown prospected along the Red Deer River area in Canada, and in 1910 he worked in both localities sending a party to Canada to continue exploration of Cretaceous dinosaur beds.

[1] Osborn, Henry Fairfield. "Tyrannosaurus and other Cretaceous carnivorous dinosaurs." Bulletin of the American Museum of Natural History ; v. 21, article 14. 1905