Boots dusty, lungs heaving, Dr. John Wiens searched the boulders of a desolate Arizona mountaintop for the last survivors of a 3-million-year-old lizard population — then said the words that ...

The Dilophosaurus is probably the best-known dinosaur whose fossil remains have been found in Arizona. That’s because the movie "Jurassic Park” made it famous — or at least a version of it.