You\u2019ll need high ceilings for this. The skeleton of a Tyrannosaurus Rex is up for auction at Christie\u2019s. Yes, the actual full-size, 67 million year-old skeleton of nature\u2019s fiercest prehistoric predator. Normally reserved for museums and university collections, this specimen will give private owners the chance to own one of the rarest pieces in the world. Recovered in the 1980s by an amateur paleontologist, the T-Rex is named \u201cStan\u201d in honor of the man who discovered it. Stan will be auctioned off October 6.