Dracorex fossil.jpg
Name Dracorex
Order Ornithischia
Suborder Marginocephalia
Class Homalocephalidae
Name Translation Genus name: Dragon king

Full name: Dragon king of Hogwarts

Period Late Cretaceous (65 million years ago)
Location United States
Diet Herbivore

Dracorex (meaning Dragon King) is a genus of pachycephalosaur, from the late-Cretaceous of North America, 66 million years ago. Dracorex, along with Stygimoloch, Nanotyrannus and a few others, was the last dinosaur to appear on Earth.

Dracorex could potentially stand up to 46 inches in height, stretch up to 9.4 feet in length, and weigh up to 154 Ibs (69 kg).


The, so far only, species is Dracorex hogwartsia, meaning (Dragon King of Hogwarts). It is known from a complete skull and four vert. These were found in Hells Creek, South Dakota. Few scientists believe that it was a juvenile Pachycephalosaurus and an analysis of pachycephalosaur fossils has questioned the validity of another genus, Stygimoloch, and may represent growth stages for Pachycelphalosaurus. An article for UC Berekely states, "The confusion is traced to their bizarre head ornaments, ranging from shields and domes to horns and spikes, which changed dramatically with age and sexual maturity, making the heads of youngsters look very different from those of adults."

In the Media

  • A Female Dracorex nicknamed Princess appeared in 4 episodes of the BBC Sci-fi show Primeval. She was the first non-theropod dinosaur to appear in the show. But her horns were longer and thinner in Primeval than her kind were in life, and looked more like the famous devil horns of its' relative, Stygimoloch. It also seems to have wing-like appendages, which it would've lacked in real life.
  • Dracorex is featured in Dino Dan Trek's Adventures & Dino Dana.
  • A cast replica Skeleton of Dracorex made an appearance in the 1st episode of the recent Documentary “Natural History Museum: World of Wonder”.