Dinosaurs & Fossils

Visitor Information Guide to Fossils in Utah

An interactive map of fossil localities, museums, and quarries!


Dinosaurs lived only during the Mesozoic Era, which is often called the “Age of Dinosaurs.” Utah has perhaps the best Mesozoic rock record in the world. The Mesozoic Era (252 to 66 million years ago) is divided into three time periods: the Triassic (252-201 million years ago); the Jurassic (201-145 million years ago); and the Cretaceous (145-66 million years ago).

Utah’s Dinosaur Record
Poster (pdf)

Age of Dinosaurs
Dinosaurs of the Mesozoic Era

Utahraptor Megablock Fossil Project

Learn about the 9-ton megablock of Utahraptor dinosaur fossils being prepared at the UGS.

Cretaceous Period

Jurassic Period