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John Day Fossil Beds National Monumentp hills
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John Day Fossil Beds National Monument
Rattlesnake Formation
 
Image of three toed horses.  

Did You Know?
The first horses evolved in North America 50 million years ago, and at least 14 different genera have been found at the John Day Fossil Beds National Monument in Oregon.

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Last Updated: August 15, 2006 at 12:37 EST