'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. ' (Publication summary)
Robert is out camping in the outback with his family and Riley. The boys can hear dingoes howling to one another, and they imagine what it might have been like to hear muttaburrasaurus calling to one another. The fossil takes him back to the mid-Cretaceous in the dead of night, where they experience firsthand the unusual call of the wild.' (Publication summary)
