Regaliceratops is a genus of herbivorous ceratopsid dinosaur that lived during the late Cretaceous period, about 68 million years ago (Mya) in what is now Canada. Closely related to Triceratops, Regaliceratops was named for its plated frill, which its describers thought looked somewhat like a crown. In 2005, geologist Peter Hews discovered a skull at the Oldman River in Alberta. The fossil was secured by a team of the Royal Tyrrell Museum. The specimen was given the nickname "Hellboy" for its horns and the difficulty of removing it from the matrix.