found by those who worked on the dam in the 1930s. The Hell Creek 

 National Natural Landmark, located on the south side of Fort Peck 

 Reservoir, is noted for a variety of fossils, including 

 Tyrannossaurus rex, Triceratops prorsus , and the oldest true 

 alligator, Brachychampsa fontana . 



Kennedy Coulee, a tributary to the Milk River near the 

 Canadian border, contains fossilized mammals from the Cretaceous 

 era. Experts at the Museum of the Rockies believe this is one of 

 the most prolific fossil areas in the world. 



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