Archaeornithomimus (meaning "ancient bird mimic") is a genus of ornithomimosaurian theropod dinosaur from the Late Cretaceous of China, 70 million years ago. It ranged from the late Campanian to the early Maastricthian stage, the fossils were discovered in the Iren Dabasu Formation. The fossils are made up of several disarticulated individuals, though material of the skull and lower jaw is lacking.

Archaeornithomimus asiaticus was about 3.3 meters (11 ft) long, and weighed up to 50 kilograms (110 lb). The hindlimbs were robustly built; this was an unusual in comparison to other Ornithomimids. Like other members of the ornithomimids, Archaeornithomimus was perhaps an omnivore, eating everything from small mammals, to plants and fruit, to eggs, and even hatchlings of other Asian dinosaurs.

In The Land Before Time

A group of Archaeornithomimus appear very briefly during The Land Before Time XIV: Journey of the Brave, indirectly distracting a Carnotaurus and leading it away from Grandpa Longneck, Daddy Topps, Wild Arms, Chomper, and Ruby.


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