"Even though the dinosaurs roamed the earth millions of years ago, we're still piecing together new information about these ancient animals. Did you know that, on average, a new species of dinosaur is discovered every single week? Or that many dinosaurs had feathers? Or that there are even modern-day dinosaurs walking around right now? New York Times bestselling author and acclaimed paleontologist Steve Brusatte writes about all the new discoveries...

A fact-filled guide to dinosaurs allows readers to compare dinosaurs of the land, sea, and sky from four different prehistoric periods.