Kirk Johnson/ Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    After the skull was excavated, museum crews created a "jacket" for it out of burlap strips and plaster of Paris. The jacket will protect the fossil, making it safer to transport.
    Heather Russo/Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    The bones of a juvenile Columbian mammoth were discovered on October 27, 2010.
    Kirk Johnson/ Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    Dr. Steve Holen, curator of archaeology at the Denver Museum of Nature & Science, stands behind a giant Ice Age bison skull unearthed on November 6, 2010. The Ice Age bison skull weighed 250 pounds and took seven people to carry it.
    Courtesy Heather Russo/Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    Here's an artistic rendering of an Ice Age bison.
    Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    An artistic rendering of a giant ground sloth
    Courtesy Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    An artistic rendering of a Columbian Mammoth.
    Courtesy Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    Crews work under a tent erected over the original discovery of a juvenile Columbian mammoth. Crews took extra care in case they found any evidence of human association with the mammoth. So far, they have not found human association.
    Courtesy Rick Wilder/Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    A crew member works on dusting off a vertebra belonging to a Columbian mammoth.
    Courtesy Rick Wilder/Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    Experts enlisted by the Denver Museum of Nature and Science examine a piece of wood that may have been chewed by Ice Age animals on November 6, 2010.
    Courtesy Heather Russo/Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    Tusks are extremely fragile, so dig crews created plaster "jackets" for them before they were excavated.
    Courtesy Rick Wilder/Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    This is the upper arm bone of a giant ground sloth discovered on November 4, 2010.
    Rick Wicker/ Denver Museum of Nature & Science
  • Ice Age Mammals found in Colorado

    A museum volunteer excavates a mastodon humerus (upper arm bone) from one of the localities at the dig site.
    Courtesy Rick Wilder/Denver Museum of Nature & Science
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