A new dinosaur species, one with feathers, has been discovered in Russia. The finding could mean that feathers were more widespread among dinosaurs than previously thought, the researchers say.

The dinosaur, described in the journal Science, was about five feet long and belonged to a group of herbivorous, beaked dinosaurs known as ornithischia.

The first feathered dinosaur was discovered in China in 1996. A number of others have been found since then, but those specimens were all theropods, the suborder that includes Tyrannosaurus rex.

“For the first time, we have found a dinosaur outside of the theropod lineage,” said the new study’s first author, Pascal Godefroit, a paleontologist at the Royal Belgian Institute of Natural Sciences.