Susan Heinrichs Gray

"Scientists who study dinosaurs often have to be good detectives. And like detectives, they sometimes come to the wrong conclusions. That's what happened when George Olson discovered the first Oviraptor fossil. Learn why Olson named the new dinosaur 'egg stealer' and how later scientists finally uncovered the truth about Oviraptor. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources...

"When you think of dinosaurs, do you think of ferocious meat-eaters terrorizing everything around them? If so, you were probably imagining the Tyrannosaurus rex, the 'tyrant lizard' of its time. But if you think you know everything there is to know about T. Rex, think again! Learn about the many sides of this mighty dinosaur. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for...

"Spinosaurus was a truly unique dinosaur. But it has certainly left behind plenty of questions for scientists to answer! Students will enjoy developing their own conclusions about the life and times of this spiny lizard. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for further research, a Did-You-Know section, and an overview of the geologic time scale"--Publisher description....

"In 1888, scientists searching for dinosaur bones found an enormous head like none they had ever seen before. They named it Triceratops, meaning 'three-horned face.' As they discovered more bones, they learned more and more about this 'new' dinosaur. With this book, you too can go back in time millions of years to explore the world of Triceratops. Additional features to enhance comprehension include informative sidebars, a glossary of key words and...

"Life was often difficult for the Iguanodon. It couldn't fight larger dinosaurs with sharp teeth or pointy spikes. Even thunderstorms could pose a danger. Learn how Iguanodon survived on Earth for nearly twenty million years and why its fossils have been discovered all over the planet. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for further research, a Did-You-Know section,...

"Imagine walking down the street and running into an Ankylosaurus. Its heavy, plated body and thick spines would surprise anybody! But despite its size and armor, this 'stiff lizard' could move pretty quickly when it needed to. Discover how Ankylosaurus continues to surprise scientists--and unsuspecting readers--to this day. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for...

"Presents an overview of the circulatory system, including key parts of the system and their jobs, how to keep the system healthy, and fun facts"--