Galactic Treasure Hunt #4 : Lost in Time

In the fourth book of the Galactic Treasure Hunt, the adventures of Jake, Scott, and Nojo continue when they get Lost in Time. The travelers take a wrong turn in the wormhole and arrive in the dangerous era of dinosaurs. The boys brave the mighty meat eaters and raging rivers of the past only to discover that alien criminals await them in the future. It's a thrill ride at both ends of time.