Harley Hitch and the Fossil Mystery

In this third book in the series, Harley goes on a time-twisting adventure!

On a school trip to the Inventia Jurassic Coast, Harley finds an unusual fossil. Has she discovered an entirely new species of dinosaur? Her class nemesis, Fenelda, doesn't believe it, so Harley decides to build a time machine to prove the discovery and win the 'best invention' competition. But messing around with time can have unexpected, dinosaur-size effects...