Hundreds of millions of years ago . . . before saber-tooth tigers and crocodiles, before great white sharks and killer whales, before the mighty megalodon . . . even millions of years before the first dinosaurs, another apex predator ruled the seas-Dunkleosteus!

Journey back to the Age of Fishes to explore what life on Earth was like during this time. Prehistoric creature lovers, ancient monster enjoyers, and fish enthusiasts will appreciate this study of one of the world's first vertebrate apex predators.