Universal/Amblin’s “Jurassic World: Rebirth” is proving why dinosaurs have such staying power at the box office as it heads for an extended box office opening of $141 million over five days.

Dinosaurs and racecars are at the top of the box office, so it’s safe to say summer movie season is in full swing. Universal’s “Jurassic World Rebirth,” the seventh in the historic franchise, took a T-Rex sized bite out of the box office with $26 million domestically from 6,