Gallimimus, the "Chicken Mimic," looks very much like an ostrich and moves like one too. At over two meters tall and six meters long, this interesting dinosaur was not much taller than a human but was much longer and faster. Its long limbs and strong, hollow bones assisted in very fast running, which helped it get from place to place and escape predators if need be. Its long, stiff tail served as a counterbalance while running. Unlike other members of its family Ornithomimidae, it had short hands and an elongated skull due to its long snout. However, like other ornitho-mimids, Gallimimus was covered with a handsome coat of feathers, complete with wing-like arms. Gallimimus fossils are found in Mongolia's Nemegt Formation, a geological formation from the late Cretaceous Period. The environment of this formation was originally humid floodplains, rivers, and lakes. It featured a wide variety of animal life and a rich amount of plant life, which was plenty of food to support omnivorous Gallimimus. Gallimimus' diet likely consisted of mostly high-fiber vegetation, but may have occassionally included small animals that it could swallow whole. Although it may have eaten meat, it certainly was not the top of the food chain; its long legs would have come in handy escaping from the local tyrannosaurids.