If Jurassic World were made in 1978, it would star Michael Cain, Charleton Heston, and Raquel Welch. It would resemble many of the disaster films of the period. And I would have seen it a couple of times, at least.
A wealth of material from the 1970s (and a few movies from even earlier) were used in this mashup; you can find a list at the YouTube link. ChiefBrodyRules said it took him 17 weeks to put this together. -via Gamma Squad