Sauropelta is an armored dinosaur that lived during the Late Cretaceous period, approximately 100 million years ago. It was a herbivore that measured up to 26 feet long and weighed up to 3 tons. It was protected by a unique armor of
From Wikipedia
Sauropelta is a genus of nodosaurid dinosaur that existed in the Early Cretaceous Period of North America. One species has been named. Anatomically, Sauropelta is one of the most well-understood nodosaurids, with fossilized remains recovered in the U.S. states of Wyoming, Montana, and possibly Utah. It is also the earliest known genus of nodosaurine; most of its remains are found in a section of the Cloverly Formation dated to 108.5 million years ago.