 Turns out it was hedge fund billionaire Kenneth Griffin who ponied up $44.6 million for a nearly complete Stegosaurus skeleton at Sotheby's. That's the most ever paid for a fossil at auction, surpassing the $32 million Abu Dhabi spent on the T-Rex skeleton stand four years ago. The 150-million-year-old dino that sold yesterday was expected to go for about $6 million. Deborah Rodriguez, CBS News.