Deinonychus

Deinonychus was a dromaeosaurid, or raptor, known for starting the "Birds are Dinosaurs" theory. Jurassic Park's Velociraptor was based on this, but apparently the name was changed because the production crew thought it was too hard to pronounce. Fun Fact: Just try, and you can pronounce any dinosaur name.

Deinonychus Pronunciation: Die Non(like the prefix) ick uss(like "us" but with an "s" sound and not a "z")-----> DieNonickuss

This dinosaur appears in Ark: Survival Evolved, and is pretty well known among paleontologists and nerds.