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Crooked Creek Natural Area
Crooked Creek Natural Area is a rich source of fossils of Early Cretaceous land vertebrates and is one of only three known areas representing this period of life on the North American continent. It has produced eight new species and three new genera of dinosaurs.
Location: Big Horn County, WY
Year designated: 1966
Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.
Last Updated: June 28, 2012