Picture you're sitting in the plush seats of a movie theater. There's popcorn in your lap and a pack of Sour Patch Kids next to you. On screen you're staring at an enormous T-Rex chasing its prey.

This has led to the films’ (greedier and more desperate) human characters going out of their way to craft dinosaurs that never existed. And, as one might expect, the goal is to renew interest in the ...