This was already tackled in previous posts. Cenozoic animals for PlaZoo, possibly, but for JWE? Nope... It's called JURASSIC World Evolution for a reason, even the franchise itself is centered on it (More on Mesozoic Era since all the dinos in the game belong to both Jurassic & Cretaceous Periods), not Cenozoic World Evolution.
2nd, I don't think Universal would allow that kind of mix-up... Mesozoic & Cenozoic animals mixing up on a JP/JW franchise.