What is "saurolophini"

Saurolophini is a tribe of saurolophine hadrosaurid native to North America and Asia. It includes Saurolophus (from Canada and Mongolia), Augustynolophus (from the United States), and Prosaurolophus (from Alberta, Canada, and Montana, U.S.). Kerberosaurus and Kundurosaurus may also be members.

Fossils of saurolophins have been found in Canada, the United States and Asia, with the North American fossils being older than the Asian, suggesting saurolophins migrated intra-continentally.