About 80 million years ago during the Cretaceous Period in the Gobi Desert, two dinosaurs were locked in deadly combat.
A hungry Velociraptor dug its sharp toe-claw into the neck of a Protoceratops; the Protoceratops bit the Velociraptor’s arm with its sharp beak.
Then, suddenly, they were buried alive!
Why do paleontologists think this was what happened? And what mysteries remain?