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!

 

This book has been graded for interest at 8-12 years.

There are 112 pages in this book. This book was published 2017 by Grosset and Dunlap .

Megan Stine has written several young biographies, including Who Was Sally Ride? .