Euoplocephalus tutus, a well-armored herbivorous dinosaur, thrived during the Late Cretaceous period. This ankylosaurid had a massive, club-like tail used for defense, and a wide, low-slung body covered in bony plates. It inhabited lush floodplains and coniferous forests in what is now North America.

Euoplocephalus tutus, a genus of ankylosaurid dinosaurs, was native to North America. Its fossils have been predominantly found in the Late Cretaceous formations of Alberta, Canada, and Montana, USA.

During the Late Cretaceous period, approximately 76 to 74 million years ago, the region that Euoplocephalus inhabited was characterized by a warm, humid climate with seasonal variations. The area was a coastal plain, featuring a mix of floodplains, river deltas, and lush forests.

Euoplocephalus tutus occupied a herbivorous niche within its ecosystem. It was adapted to browse low-lying vegetation, with its robust body and armored plating providing protection from predators. The diverse plant life of the time, including ferns, cycads, and conifers, provided ample food sources for this armored dinosaur.