Sinornithomimus dongi

† Sinornithomimus dongi is a Late Cretaceous ornithomimosaur from the Iren Dabasu Formation of Inner Mongolia, China, represented by a bonebeds of multiple juveniles and sub-adults. This gregarious behavior suggests herd dynamics in ornithomimosaurs.

Diet & Feeding

Herbivore

Sinornithomimus dongi 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

Sinornithomimus dongi 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.