Cast of a Diabloceratops eatoni skull

This plant-eating dinosaur had long horns above its eyes, a round nose, and curved horns at the back of its frill. It lived about 79.5 million years ago. It was excavated on the Bureau of Land Management's Grand Staircase-Escalante National Monument in Utah. The original specimen is curated for BLM by the Natural History Museum of Utah, catalog #UMNH 16699.