One of the world's biggest T. rex skeletons is up for sale(1/3)

One of the world's most complete Tyrannosaurus rex skeletons is up for sale. STAN the T. rex, named after the paleontologist who first discovered his bones, walked the Earth some 67 million years ago. Now his skeleton will be auctioned on October 6, with an estimate of $6 million-$8 million. (Photo/Agencies)

One of the world's most complete Tyrannosaurus rex skeletons is up for sale. STAN the T. rex, named after the paleontologist who first discovered his bones, walked the Earth some 67 million years ago. Now his skeleton will be auctioned on October 6, with an estimate of $6 million-$8 million. (Photo/Agencies)

One of the world's most complete Tyrannosaurus rex skeletons is up for sale. STAN the T. rex, named after the paleontologist who first discovered his bones, walked the Earth some 67 million years ago. Now his skeleton will be auctioned on October 6, with an estimate of $6 million-$8 million. (Photo/Agencies)