Olorotitan arharensis


Olorotitan is a large lambeosaurine dinosaur. Fan shaped caudal end of its dorsoventrally broad crest is morphologically different from crests of other lambeosaurines. Neural spines of adjacent anterior caudal vertebrae of Olorotitan were articulated, making the tail rigid. Lambeosaurines were abundant in North America, nevertheless finding of Olorotitan indicates lambeosaurines originated in Asia and migrated to North America afterward.


