Principal photography wrapped on budget, and an impressive 12 days ahead of schedule. Named for the Jura mountains in Switzerland, the Jurassic period was the second of three time divisions of the Mesozoic, the era of dinosaur dominance. It was characterized by mid-sized ornithischians such as Stegosaurus and saurischians such as Allosaurus. Eras Periods Epochs m.y.a. The periods represent specific sequences of rock as well as time.
Geologists use the symbols shown above to classify rocks on a map according to their ages.
The most impressive dinosaur fossils are found in Cretaceous-age rocks. Brush up on your Mesozoic vocabulary. Jurassic Park started in the spring of 1995. Jerry, now a longtime Spielberg collaborator and veteran of the first movie, focused his substantial production skills on the project. He roughed out a schedule and budget as Michael Crichton was concluding his novel and Spielberg and screenwriter David Koepp were developing ideas for the screenplay.