Dinosaur fossils have become a high-end collectibles market, with auction prices reaching tens of millions of dollars. The attempted sale of Shen, a rare T. Rex

Dinosaur fossils have become a high-end collectibles market, with auction prices reaching tens of millions of dollars. The attempted sale of Shen, a rare T. Rex planned for auction at Christie’s, shows how questions around original bone, replica casts and disclosure are testing a market where value …