Some early thyreophorans were the Scutellosaurus and Scelidosaurus. The Scutellosaurus—an Early Jurassic period dinosaur whose remains were discovered in western North America—was small and bipedal (two-footed), similar to the Lesothosaurus. The Scutellosaurus had numerous small bony skin plates (although not as large as later thyreophorans) and was among the smallest of the armored dinosaurs, growing from just over a foot (around a half meter) to 3 feet (1 meter) in length. The Scelidosaurus was an Early Jurassic period dinosaur living in western Europe and England about 180 million years ago. It was a quadruped (four-footed) and was much heavier than Scutellosaurus, growing to a length of approximately 13 feet (4 meters). It had heavy, bony plates, and hoof-like claws.