Travel along with Sue Hendrickson as she uncovers the remains of a huge dinosaur.

"What did horses look like millions of years ago? How big were mammoths and mastodons? This book gives readers an in-depth look into the world of prehistoric mammals by investigating the remains they left behind. Readers will study colorful images of mammal fossils to learn about the size and shape of each animal, but also the behavior and lifestyle they may have lived. The text is paired with a fact-file design, complete with sidebars and diagrams,...

Describes the characteristics of amphibian fossils, discusses how they are formed, and details how paleontologists determine fossil age.

"Sea creature fossils are particularly interesting because they're often found where there isn't any water! They give scientists insight into how Earth has changed over time-in fact, over millions of years. Readers uncover some of the oldest sea creature fossils in this volume and find out how they formed, where they were found, and what they can tell us about the past, including where water once was and isn't anymore. Up-close photographs of these...

"According to fossils that have been found, insects have been living on Earth for more than 400 million years! That means they were around before the dinosaurs and long before humans walked on Earth. How do scientists know this? They study the different kinds of impressions left in rock from these amazing prehistoric creatures. Readers have a chance to see photographs of these finds up close in this book, alongside accessible text that explains the...

"Petrified forests are some of the coolest-looking fossils scientists find and study. They can tell us so much about the past, including what Earth was like before humans walked on it. How do these amazing remains form? Why? Readers can find the answers to these questions within the pages of this book, complete with close-up photographs of petrified wood they might never otherwise see. Age-appropriate text and detail support science class learning...