Temporal range: Late Cretaceous
An artist's illustration of Regaliceratops peterhewsi
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Ornithischia
Genus: Regaliceratops
Brown & Henderson, 2015
Species: R. peterhewsi
Binomial name
Regaliceratops peterhewsi
Brown & Henderson, 2015

Regaliceratops is a genus of herbivorous ceratopsid dinosaur that lived during the late Cretaceous period, about 70-68 million years ago in what is now Canada.

They are closely related to the 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.

In 2015, Caleb Marshall Brown and Donald Henderson named and described the type species Regaliceratops peterhewsi. The generic name combines Latin regalis, "royal", a reference to both the crown-shaped neck shield and the "Royal" Tyrrell, with a Greek keras, "horn", and ops, "face". The specific name honors Hews.

Regaliceratops skull

The holotype was found in a layer of the St. Mary River Formation dating from the middle Maastrichtian, about 68 million years old. It consists of a rather complete skull of which the snout bone, the rostral, is lacking. The skull has been deformed by compression and its rear and underside are obscured by matrix.

Regaliceratops was about five metres long, with an estimated weight of 1.5 tonnes.

In The Media

  • Regaliceratops made it’s very 1st Media appearance in the 5th Season 1st episode of Dinosaur Train.




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