<ul data-eligibleForWebStory="false">A juvenile Ceratosaurus dinosaur, dating back 150 million years to the Late Jurassic period, is up for auction for $3.5 million.The well preserved skeleton was discovered in Wyoming in 1996, boasting 139 original fossil bones and detailed reconstructions.The skull is nearly complete with 57 fossil elements and 43 sharp teeth, exuding fearsome predator characteristics.Sotheby’s will auction the dinosaur on July 16th, with opening bids starting at the $3.5 million mark.