Archaeornithomimus asiaticus

†Archaeornithomimus asiaticus was an ornithomimosaur herbivore-omnivore of the Late Cretaceous, discovered in Inner Mongolia, China. An early member of the ostrich-mimic lineage, it was a fast bipedal runner approximately 3.5m long with a toothless beak and long forelimbs. Described by Gilmore in 1933, it is among the earliest and most primitive ornithomimosaurs known from Asia.

Diet & Feeding

Herbivore

Archaeornithomimus asiaticus was a plant-eating dinosaur. Herbivores typically fed on ferns, cycads, conifers, and other vegetation available during their era. Many herbivorous dinosaurs developed specialized teeth and digestive systems for processing tough plant material.

Time Period

Cretaceous Late Mesozoic Era

Archaeornithomimus asiaticus lived during the Cretaceous Late period of the Mesozoic Era, approximately 100.5 to 66.0 million years ago.

The final age of dinosaurs, featuring iconic species like Tyrannosaurus rex, Triceratops, and Velociraptor. Dinosaurs reached their peak diversity before the catastrophic asteroid impact at the Chicxulub crater ended the Mesozoic Era.