Arkansaurus fridayi illustration by Brian EnghWhile it is generally thought that the ancient landmass of Pangaea was completely broken apart by the end of the Jurassic Period (~145 million years ago), paleontologists have recently discovered animals, such as the sauropod dinosaur Mierasaurus, and the mammal-like Cifelliodon, who have ancestors that suggest they originated outside of North America. These animals would have immigrated to North America across a land bridge during a time of lower sea levels during the Early Cretaceous, as the two continents began to move away from one another. This suggests that the breakup of the ancient landmass Pangaea continued for about 15 million years later than previously thought, and migrations of both dinosaurs and mammals was occurring during the Early Cretaceous (145 to 101 million years ago). Come learn about how these important fossils from Southeastern Utah have ties to Europe and Asia.

Lecture is FREE! The Moab Information Center is conveniently located on the corner of Main and Center St.