"When Jack Horner was a child, he was fascinated by dinosaur fossils. He hunted for them and dreamed of being a great paleontologist. But Jack struggled with sc

On the way to his Grandma's house, Jack makes an unexpected discovery that sends them on a fantastic adventure back in time! What will they find on their journe

"A fascinating thriller, well crafted and relentless ... A cross between Tony Hillerman and Larry McMurtry, this is one hell of a good read."--Douglas Preston,

2020-2021 Keystone to Reading Elementary Book Award List Notable Social Studies Trade Books list – Winning Title! 2019 Sigurd F. Olson Nature Writing Award -

Dinosaurs were reptiles that lived millions of years ago. It was a long time before there were any people on the earth. Scientists have looked at dinosaur bones