Download or read book What Was the Age of the Dinosaurs? written by Megan Stine and published by Penguin. This book was released on 2017-02-28 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Travel back to the time when the mighty dinosaurs ruled the earth. The Age of Dinosaurs began about 250 million years ago. In the beginning they were quite small but over time they evolved into the varied and fascinating creatures that captivate our imaginations today. What we know about dinosaurs is evolving, too! We've learned that some dinosaurs were good parents, that dinosaurs could grow new teeth when old ones fell out, and that most dinosaurs walked on two legs. We've even discovered that birds are modern relatives of dinosaurs!