How fast were dinosaurs? These mud-covered birds may show us

A newly discovered, raccoon-sized armored monstersaurian from the Grand Staircase-Escalante National Monument in Southern Utah, United States, reveals a surprising diversity of large lizards at the pinnacle of the age of dinosaurs.

Armored, Large-Bodied Lizards Lived alongside Dinosaurs in Cretaceous North America

New monstersaur species a ‘goblin prince’ among dinosaurs - EurekAlert!