They ruled the planet for 150 million years. And then they were just…gone. Millions of years later, the traces of these giant reptiles—their strange skeletons, with teeth the size of railroad spikes—still inspire a powerful sense of awe. Our Instaread on Steve Brussate’s THE RISE AND FALL OF THE DINOSAURS captures the current state of paleontology, a golden age when dozens of new species are discovered each year. Learn something new today in the Instaread app.