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Uploaded on Dec 10, 2009
Paleontologist Kirk Johnson discusses how to read layers of sediment at Boot Hill fossil site near Republic, WA. Johnson has teamed up with Seattle's Burke Museum of Natural History and Culture to co-curate the exhibition "Cruisin' the Fossil Freeway," on view from Dec. 19, 2009 to May 31, 2010. www.burkemuseum.org