Book Robert Irwin Dinosaur Book #6

Book six in Robert Irwin's exciting book series. Discover a world of prehistoric adventure and dinosaurs. Which dinosaur was the fastest runner of all time? Robert is taking part in an athletics carnival. After an exhausting training session, he starts thinking about the biggest, fastest and strongest creatures in the dinosaur kingdom. With his best friend Riley, the two friends travel back in time to check out the gold medal champions of prehistoric times.