John Day Fossil Beds National Monument is a U.S. national monument in Wheeler and Grant counties in east-central Oregon. Located within the John Day River basin and managed by the National Park Servic
Sheep Rock near sunset
Palisades at the Clarno Unit of the monument
Blue Basin
Thomas Condon
Eocene
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The Eocene is a geological epoch that began about 56 million years ago. It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The end point of the Eocene is the Eocene-Oligocene t
John Day Fossil Beds National Monument
…by the National Park Service, the park is known for its well-preserved layers of fossil plants and mammals that lived in the region between the late Eocene, about 45 million years ago, and the late Miocene, about 5 million years ago. The monument consists of three geographically separate units: Sheep Rock…
Subdivisions of the Eocene
Eocene vegetation of the Clarno Nut Beds in John Day Fossil Beds National Monument was humid subtropical forest vegetation of high diversity dominated by angiosperms.
Nuphar seeds, Nymphaeaceae, Ypresian
Mastixia tree seed, Nyssaceae, London Clay