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Recounts the history of Agate Fossil Beds. Tells why this land became part of the National Park System, what fossils are found there, and where this monument is located. Includes tips to visitors, a reading list, and information on other sites in the National Park System.
Miocene fossils excavated in western Nebraska
The keen-eyed, cool-headed, and fearless men (Kit Carson, Jim Bridger, Buffalo Bill Cody, Big Foot Wallace, and Captain Jim Cook, among others) who were pivotal personalities for more than half a century in the almost ceaseless task of clearing the way for and guarding the lives and properties of explorers, emigrants, and settlers in the West, are an extinct type of pioneer, Accounts of the heroic deeds of this handful of men, however, remain today as indelible records that dramatize the melting away of this country’s vast frontiers.
Describes the early exploration of Scotts Bluff by fur traders and the events that led to the establishment of the Scotts Bluff National Monument in Nebraska. Also includes a guide to the area and suggested readings.
This 20 page report describes the stratigraphy of the Cedar Mountain and Dakota formations in and around Dinosaur National Monument in northeast Utah and includes new palynology and radiometric age data. The contract between these formations is unconformable in which the Dakota formation has incised into the underlying Cedar Mountain formation. Locally, the Dakota includes a basal marine mudstone and shale unit that contains late Albian dinoflagellate cysts, which represents peak sea level during the Kiowa-Skull Creek depositional cycle and indicates the first marine incursion of the Cretaceous Western Interior Seaway into Utah.