It's 30 years since dinosaurs roared into cinemas worldwide and made Hollywood history as the first movie to gobble up more than $1billion at the box office.
With its groundbreaking special effects, director Steven Spielberg’s blockbuster Jurassic Park became one of the greatest family films of all time.
Yet special effects and computer imagery experts did not greet the idea of making the movie in the early 90s with raptorous applause as they doubted the technology of the time was anywhere near good enough to make the dinosaurs look real.
