Green and blue clay amphitheater at Sheep Rock. The green clay contains fossils of ancient mammals including sabre tooth cats.

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Green and blue clay amphitheatre at Sheep Rock. The green clay contains fossils of ancient mammals including sabre tooth cats and Eohippus, an early progenitor to the modern day horse.

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Size: 5826px × 3900px
Location: Sheep Rock Unit, John Day National Monument, Oregon, USA
Photo credit: © Craig Ruaux / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ancient, clay, colorful, colourful, day, eohippus, erosion, evolution, fossil, fossilization, horse, john, landscapes, monument, national, nature, oregon, outdoors, preservation, preserved, sabre, tooth