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U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Over 300 dinosaur tracks on a 100 million-year-old tidal flat were uplifted when the Rocky Mountains rose 70 million years ago. The tracks were discovered when Alameda Parkway was constructed in 1937.
Public Domain. Photgraph by Joe Tempel
Download Original (320 x 200 pixels, 27.6 KB)
