Toothbrush-Bristled Dinosaur Discovered
A new species of pachycephalosaur, Platytholus clemensi, has been discovered in Montana's Hell Creek Formation. The dinosaur had a dome-shaped head with traces of keratin, giving it a "brush cut" appearance. The researchers believe that the keratin bristles were used for display and courting, rather than head-butting rituals. The discovery also revealed a head wound that had healed partially in life, but the cause remains unknown. The study suggests that the dinosaur likely distinguished gender by color, similar to modern birds.