fossils

"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 . . . 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"--Provided by publisher.

"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. . . . This book . . . explains the different kinds of insect fossils, how they formed, and what we've learned from them"--Provided by publisher.

"Scientists aren't quite sure exactly when humans evolved, but through fossils and artifacts, we have knowledge about human ancestors from millions of years ago. From bones to tools, the fossils that have been found each tell a small part of the story of our prehistoric past"--Provided by publisher.

"This field guide has 100 entries highlighting a variety of fossils, rocks, and minerals. Readers will gain a greater understanding about these objects and will be able to identify them in the wild"--Provided by publisher.

Often, when kids think about dinosaurs, they think huge prehistoric creatures shaking the ground as they walk, monstrous battles between animals that are thousands of pounds, and the fierce roars shown in the movies. But some dinosaurs were small, no bigger than a house pet! In this book, readers learn about 11 dinosaurs that didn?t have size on their side, but found a way to survive ancient Earth anyway. Their defenses, body adaptations, diet, and fossils are discussed in the main content, and a vital statistics chart shows when and where they lived at a glance.

In their long journey from San Francisco to Lusk, Wyoming, in 1889, David (Siu-Long) Wong and his parents have encountered terrible prejudice because they are Chinese immigrants; but here they are given a job at John Bell Hatcher's paleontological excavation digging up dinosaur bones, including an eight-foot long Triceratops skull, and David becomes fascinated by dinosaurs and resolves to become a paleontologist. Includes historical note on J.B. Hatcher.

"Great white, bull, and tiger sharks are some of today's most talked-about sharks. But have you met the sharks of yesterday? Each prehistoric shark had its own amazing-and sometimes strange-features. The scissor-tooth shark had teeth in a spiral shape. The giant megalodon was about three times the size of a great white. One small prehistoric shark had a big dorsal fin in the shape of an ironing board! Readers will gobble up all the facts about these early ocean hunters and learn how they compare to modern sharks"--Provided by publisher.

"You won't believe why the Old Scientist swallowed a dinosaur, a fern, a rock, a pick, a dustpan, a sifting screen, a pen, and a magnifying glass!"--.

An illustrated study of prehistoric life on Earth, examining the fossil record, and providing examples of how live forms have evolved over the ages to adapt to perpetually changing conditions.

Exploring different eras of ancient Earth, readers can follow in the footsteps of paleontologists as they learn what a fossil is, how they are preserved, and where the main fossil sites have been found.