For 180 million years dinosaurs ruled the Earth, evolving to become some of the largest, most ferocious, and deadly creatures the world has ever known. Though the dinosaurs disappeared from existence 65 million years ago, regular new discoveries and incr
"Describes the animals of the Tertiary Period, when huge open plains of grass formed, and mammals developed long legs to suit this new environment. Includes an Animal Families glossary, prehistory timeline, and pronunciation guides"--
"Describes some of the animals of the Jurassic Period, a time when dinosaurs reached their biggest sizes. Includes an Animal Families glossary, prehistory timeline, and pronunciation guides"--