Book two in Robert Irwin's exciting book series. Discover a world of prehistoric adventure and dinosaurs. The Irwins are in Texas, doing some crocodilian research on the American alligator. Robert knows that the ancient deinosuchus roamed around these parts, and when his fossil transports him back in time, he gets to see firsthand the prehistoric predator take on an albertasaurus and win! Featured Dinosaur: Albertosaurus.Imagine a T-Rex, only a little bit smaller. This ferocious beasty weighed two tonnes, stood 3.5m tall and grew to 8m long.