Want to own a real T. rex? It could cost you $30 million

"Gus, Tyrannosaurus rex skeleton, is pictured during a press preview at Sotheby's in New York City on July 1.'/>

The Tyrannosaurus rex fossil known as "Gus" will go up for auction on Tuesday. It's not the first time dinosaur bones have been sold to the highest bidder.

(Image credit: Timothy A. Clary)