Edmontonia was a genus of armored dinosaur that lived during the Late Cretaceous period, approximately 76 to 66 million years ago. It inhabited what is now North America. Specifically, Edmontonia fossils have been found in the western part of North America, including areas that are part of modern-day Canada and the United States. These dinosaurs roamed in regions that were characterized by diverse ecosystems, including lush forests, swamps, and coastal areas. Edmontonia was a herbivorous dinosaur and belonged to the group of dinosaurs known as ankylosaurids, known for their heavily armored bodies and often equipped with tail clubs for defense.