Diabloceratops was a type of dinosaur that belonged to the ceratopsian family, which had horns and frills on their heads.
Diabloceratops lived about 81 million years ago in what is now Utah, in the United States.
Diabloceratops had two horns on its forehead, like other ceratopsians, but it also had two large, curved horns on the back of its frill, which gave it a devilish appearance.
The name Diabloceratops means "devil-horned face" in Spanish and Greek.
Diabloceratops was a medium-sized dinosaur, about 4.5 meters (15 feet) long and 1.3 metric tons (1.4 short tons) in weight.
It was a herbivore, meaning it ate plants, and probably used its horns and frill for defense or display.
Diabloceratops was one of the oldest-known ceratopsians, and may have been a transitional form between two groups of ceratopsians: the centrosaurines and the chasmosaurines.
Diabloceratops is known from only one skull and a partial lower jaw, which were found in 2002 by paleontologist Don DeBlieux.
Another specimen, found in 1998, may belong to Diabloceratops or a different genus.
Diabloceratops was named and described in 2010 by James Kirkland and Donald DeBlieux.
Here is a summary of what Diabloceratops looked like:
A dinosaur with horns and frills on its head
Two large, curved horns on the back of its frill
A medium-sized herbivore, about 4.5 meters long and 1.3 metric tons in weight
Lived about 81 million years ago in Utah, USA
One of the oldest-known ceratopsians, possibly a transitional form
Known from only one skull and a partial lower jaw