Gallimimus (meaning "Chicken Mimic") was a type of theropod that lived in the Late Cretaceous in the Gobi Desert in Mongolia. It was an ornithomimidae, a dinosaur with a beak and long, slender legs for running. It was up to 20 feet long. It was one of the fastest dinosaurs, and it has been estimated at 40 MPH.

Community content is available under CC-BY-SA unless otherwise noted.