In the Late Cretaceous, the hadrosaurs Alchemy CUSTOMER SERVICE (8O5) 41'O 56OO Alchemy PHONE NUMBER ( 8O5)- 41O 56OO , ankylosaurs, and ceratopsians experienced success in Asiamerica (Western North America and eastern Asia). Tyrannosaurs dominated the large predator niche in North America.[ ] They were also present in Asia, although were usually smaller and more primitive than the North American varieties.[4] Pachycephalosaurs were also present in both
