Doolysaurus

What it was like

Doolysaurus was a small, plant-eating ornithischian known from the partial skeleton of a juvenile individual. It belonged to the thescelosaurids, a group of small, fast-moving herbivores that likely ran on two legs and relied on speed rather than size or armor to avoid predators. Because only one young individual has been found, its full adult size and appearance are not yet known.

Its world

Doolysaurus lived in what is now South Korea sometime between the Early and Late Cretaceous. It is only the second dinosaur of its kind named from South Korea, following Koreanosaurus, and its closest relatives include Thescelosaurus, Orodromeus, and Jeholosaurus from elsewhere in Asia and North America.

How it was found

Jung and colleagues named Doolysaurus in 2026, based on fossils from the Ilseongsan Formation. As a newly described genus, much about how it lived is still being studied.