Billionaire investor Ken Griffin, founder and CEO of hedge fund Citadel, purchased a late-Jurassic stegosaurus skeleton for $44.6 million at Sotheby’s Wednesday, marking the most valuable fossil ever sold at auction.
The 150 million-year-old stegosaurus named “Apex” measures 11 feet tall and nearly 27 feet long from nose to tail and it is a nearly complete skeleton with 254 fossil bone elements. Apex was only expected to sell for about $6 million.