Exploring dinosaurs & prehistoric creatures

Provides a description of the megalosaurus, a dinosaur species that lived from about 185 million to 160 million years ago, discusses the history of megalosaurus discovery and study, and explains how scientists can tell the difference between the fossils of various dinosaurs.

Provides a description of the edmontosaurus, a dinosaur species that lived from about 72 million to 65 million years ago, discusses the history of edmontosaurus discovery and study, explains what scientists have learned from a complete edmontosaurus skeleton fossil found in 1909, and speculates about the extinction of the dinosaur.

Provides a description of the compsognathus, a dinosaur species that lived about 150 million years ago, discusses the history of compsognathus discovery and study, and speculates on what life was like for the compsognathus during the Jurassic period.

Describes the physical characteristics, movements, diet, defenses, life cycle, and modern relatives of the prehistoric pelycosaur.

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.