Forty-one highly-detailed accurately rendered illustrations of ancient animals include the Megistoterium, one of the largest flesh-eating mammals that ever lived; the Smilodon, largest of saber-toothed tigers; the giraffe-like Indricotherium that browsed on treetops and many more - all royalty-free. Captions.
- Genre: Juvenile Nonfiction
- Subgenre: Activity Books
- Publisher: Dover Pubns
- Language: English
- Format: paperback
- Release Date: April 1, 1991
- Date Published: April 1, 1991
- Author: Jan Sovak