What is archaeornithomimus?

Archaeornithomimus is a genus of theropod dinosaur that lived in what is now Asia during the Late Cretaceous period, approximately 70-65 million years ago. It belonged to the group of dinosaurs known as ornithomimids, which were characterized by their bird-like appearance and long, slender limbs.

Archaeornithomimus was a relatively small dinosaur, measuring about 6-7 feet in length and weighing around 100-200 pounds. It had a toothless beak, long neck, and long, slender tail, all of which were adaptations for its herbivorous diet. It likely fed on plants and small insects.

Fossils of Archaeornithomimus have been found in Mongolia, specifically in the Nemegt Formation. These fossils have provided valuable insight into the evolution and ecology of ornithomimid dinosaurs. Additionally, the discovery of Archaeornithomimus has helped scientists understand more about the diversity of dinosaurs that lived in Asia during the Late Cretaceous period.