Pentaceratops

Pentaceratops sternbergi

Pentaceratops ("five-horned face") is a genus of herbivorous ceratopsid dinosaur from the late Cretaceous Period of what is now North America. Fossils of this animal were first discovered in 1921, but the genus was named in 1923 when its type species, Pentaceratops sternbergii, was described. Pentaceratops lived around 76–73 million years ago, its remains having been mostly found in the Kirtland Formation in the San Juan Basin in New Mexico. Another species, P. aquilonius, was named by Nick W. Longrich in 2014, but it is debated if it belongs to that genus or a separate taxon