In 1974, Prenocephale was discovered by a team of paleontologists from Russia and Poland. These scientists were digging for fossils in the Gobi Desert.
The name Prenocephale means sloped head, which refers to the egg shape of this animal's head. Very little is actually known about Prenocephale. Partial skulls and a few other small bones are all that have been found. For this reason, reconstructions are based largely on one of its close relatives, Stegoceras.
Prenocephale had very large eyes which it probably used to detect approaching predators. The brain of Prenocephale was larger than many other dinosaurs.
Prenocephale was a member of the Pachycephalosauria, or bonehead dinosaur group. These dinosaurs are often compared to modern sheep because of their thick skulls. It is thought that these skulls may have been used in head bunting contests.