Tag: hell creek formation

  • Ancient Dinosaur Discovery Connects Extinction and Environmental Change

    Ancient Dinosaur Discovery Connects Extinction and Environmental Change

    When visitors step into the Smithsonian’s National Museum of Natural History this holiday season, they will encounter more than a striking fossil behind glass. They will come face to face with a fragment of deep time, a survivor of processes that shaped Earth long before humans existed. The near-complete skull of a Pachycephalosaurus, a dome-headed…