The skin of a dinosaur -- a hadrosaur that lived some 65 million years ago -- pokes out of the soil at Hell Creek Formation, North Dakota, in this undated handout released December 3, 2007. A partially mummified hadrosaur discovered by a teenager in North Dakota, may be the most complete dinosaur ever found, with intact skin that shows evidence of stripes and perhaps soft tissue, researchers said on Monday. [Agencies]