An Alaska volcano and DNA reveal the timing of bison's arrival in North America

Alaska Newsflash
  • Author: Yereth Rosen
  • Updated: 20 minutes ago
  • Published 51 triflings ago

The oldest known bison fossil in North America was discovered at Ch’ijee’s Gruff along the Porcupine River near Old Crow, Yukon. The fossil was beneath a layer of 130,000-year-old volcanic ash, which allowed scientists to antiquated it. (Alberto Reyes / University of Alberta)

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