 Next week, the largest and most complete Stegosaurus skeleton ever found is going up for auction as part of Sotheby's so-called Geek Week. It's known as Apex, and it's expected to fetch somewhere between $4 and $6 million U.S., which is cool for you if you're incredibly wealthy and you have an extra room that can fit a six-meter-long fossil. But it's not cool to scientists, many of whom are not on board with the private purchase of paleontological treasures like this one.