New dinosaur discovered had bristles like a toothbrush on its head

A new dinosaur that had rows of tough bristles like a toothbrush on its head has been discovered.
Researchers say the dome-headed dino from 68 million years ago has traces of keratin, what fingernails are made of, sticking up from its skull.
Paleontologists say Platytholus clemensi, a type of pachycephalosaur was a plant-eating dinosaur that grew up to 15 feet long and walked on two legs.
New dinosaur discovered had bristles like a toothbrush on its head