The “chicken mimic” was discovered in the early 1970s in the Gobi Desert of Mongolia and described in 1972 by Halszka Osmólska, Ewa Roniewicz, and Rinchen Barsbold.
Gallimimus lived during the Late Cretaceous about 71 to 68 million years ago. Up to 6 meters (20ft) in length, 2 meters (6.6ft) in height at the hips and 1000 pounds (454kg) in weight.
Gallimimus can be found on both Isla Nublar & Isla Sorna. On Isla Nublar & Isla Sorna the Gallimimus is shown having a herd behavior similar to real life.