Diabloceratops

Diabloceratops /daɪˌæbloʊˈsɛrətɒps/ [dee-ab-lo-ser-a-tops] is an extinct genus of centrosaurine ceratopsian dinosaur that lived approximately 79 million years ago during the latter part of the Cretaceous Period in what is now Utah, in the United States.[1] Diabloceratops was a medium sized, moderately-built, ground-dwelling, quadrupedal herbivore, that could grow up to an estimated 5.5 m (18.0 ft) long.[2] Diabloceratops is paleontologically significant because, at the time of its discovery, it was the oldest known ceratopsid, and first centrosaurine known from latitudes south of Montana.

Etymology
The genus name combines the Spanish word Diablo, meaning "devil", a reference to the horns on the neck shield, with the Latinised Greek word ceratops, meaning "horned face", a usual element in ceratopsian names. The specific name honours Jeffrey Eaton, a paleontologist at Weber State University and long time friend of the lead author Jim Kirkland. Eaton had a big role in establishing the Grand Staircase-Escalante National Monument where the specimen was found. The type species, Diabloceratops eatoni, was named and described in 2010 by James Ian Kirkland and Donald DeBlieux.

Discovery and occurrence
The only two specimens of Diabloceratops eatoni were recovered at the Wahweap Formation, in Kane County, Utah. Type specimen UMNH VP 16699 was collected by Don DeBlieux in 2002, at the Last Chance Creek locality of this formation, in intraclastic sandstone that was deposited during the Campanian stage of the Cretaceous period, approximately 81 to 76 million years ago.[3] It consists of a partial skull with a piece of the lower jaw, with the right side being intact and part of the left side, which has been weathered. Another specimen UMNH VP 16704 was discovered years earlier in 1998 by Joshua A. Smith at the Nipple Butte locality of the same formation, but was not described until 2010, when it was assigned to Diabloceratops. These specimens are housed in the collection of the Natural History Museum of Utah.