 Thanks to fight, this specimen showed no signs of combat. It didn't die fighting. Apex will be auctioned next week as part of the Geek Week series. Sotheby's is estimating it will sell for $4 to $6 million. A stegosaurus of this caliber has never sold at auction before. There are only eight or nine known fossilized stegosauruses in the world. I'm Ed Donohue.