Mummified dinosaur unearthed in North Dakota

• Story Highlights
• The Edmontosaurus found in 2004 is covered in fossilized skin as hard as iron
  
• Workers are slowly unearthing the dinosaur from its 65-million-year-old tomb
  
• Dinosaur may give us the closest example of what dinosaurs looked like
  
• It is the fourth dinosaur mummy of significance ever found in the world
  
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