Pentaceratops

Pentaceratops is a genus of herbivorous ceratopsid dinosaur from the Late Cretaceous of North America. The type species, Pentaceratops sternbergi, means "five-horned face," a reference to the animal's distinctive skull. Fossils of Pentaceratops are known primarily from skull material recovered from the Kirtland Formation of what is now New Mexico, United States, dating to the Campanian stage of the Late Cretaceous.

Pentaceratops was a large, quadrupedal herbivore with a robust skull and a prominent frill. Its most notable feature is a horned skull: a pair of large brow horns above the eyes, a nasal horn, and two additional horn-like projections on the frill, giving the name "five-horned." The frill carried ornamentation along its edge and may have included epiparietal bones.

As a ceratopsid, Pentaceratops was herbivorous, eating plants available in early Campanian ecosystems, such as conifers and flowering plants. The horns and frill likely served in social interactions, species recognition, and defense against predators such as tyrannosaurids.

Pentaceratops is one of several large, ornate ceratopsids from western North America. Its skull remains help paleontologists understand the diversity and evolution of horned dinosaurs in the Late Cretaceous.