What planet are we on?
As the film poster clearly states, the spaceship actually landed on our earth – 65 million years before the Common Era. This not only explains the film’s title, but also why the planet is populated by extremely hungry dinosaurs.
How this journey through time was motivated and where Adam Driver’s character actually comes from is not clear from the trailer, but it can be assumed that the director duo Scott Beck and Bryan Woods got their inspiration from “Planet of the Apes”, since that’s where they are too a space traveler lands on a very different earth (albeit at a future date).