Gray, Susan Heinrichs

Presents information on the prehistoric creature, ichthyosaurs, and describes its size and physical characteristics, where it lived, a list of different species and what scientists believe their daily life was like. Includes geologic time scale, glossary, and index.

Provides a description of an extinct class of marine animals known as trilobites, discusses their physical characteristics, and explains what scientists believe about the daily lives of trilobites.

Describes the physical characteristics, movements, diet, defenses, and modern relatives of the prehistoric ammonoid.

Describes the physical characteristics of crinoids and blastoids, plant-like sea animals that lived during prehistoric times, and explains what scientists believe their daily lives were like.

"Provides comprehensive information on the history of horse shows, types of shows, and how to get started"--Provided by publisher.

Discusses the use and development of vaccines, the field of epidemiology, the role of the Center for Disease Control and the World Health Organization, and more, and covers pioneering scientists such as Edward Jenner, Richard Doll, and Jonas E. Salk.

Describes what is known about the body, movements, and hunting methods of "Tyrannosaurus rex" and discusses the first discovery of a tyrannosaur and the unearthing of "Sue." Includes a glossary, a geologic time scale, and a list of places to visit or contact.

Introduces paleontology and what is studied, the history of paleontology, what paleontologists do, tools they use, and other related topics.

Looks at the qualities of giant African snails and examines how they became an invasive species in many of the world's tropical and sub-tropical regions, how they cause problems in their new environments, and the ways that people have attempted to deal with them.

Discusses glaciers, oceans, volcanoes, rocks, minerals, earthquakes, and the history of the Earth.