Have you ever been to a museum to see the dinosaur exhibit? Iguanodon, Apatosaurus, and Tyrannosaurus are all there. Where did these enormous skeletons come from and how did they get inside the museum?

Long ago, dinosaurs were everywhere. No one knows why they suddenly died out. Until a little over a hundred years ago, no one even knew they existed. Then people began finding fossils -- bones and teeth and footprints of dinosaurs that had turned into stone. What finds these were! Everyone clamored to see them.

But dinosaur bones don't walk into museums by themselves. A team of experts has to work together to dig them up and put them together again. Clear, easy-to-read text and exuberant full-color drawings by acclaimed author-illustrator Aliki detail how dinosaur skeletons are dug out of the ground, bone by fragile bone -- and then assembled to look like the dinosaurs of millions of years ago.