Ages 9 to 12 years. When eleven-year-old 'Banjo' Mongomery's dad builds a doggy door out of scap metal from a government science lab he opens a time tunnel back

An adventure story about two boys and Dino, The Dinosaur Dog, who find a time warp tunnel going back to the age of dinosaurs.

Do you love dinosaurs? Ethan does. He loves dinosaurs so much that he wished he could be a real dinosaur, and not just any dinosaur, but a Tyrannosaurus Rex. An

The story begins as an earthquake shakes a mountain, sending tons of rocks and boulders downward into a tranquil forest. From the rubble, a fossilized dinosaur

A stunning archaeological thriller from Douglas Preston, the New York Times bestselling co-author of Brimstone and Relic. A moon rock missing for thirty years..