06/03/2026
Chasmosaurus looked like it should have been a tank, but its giant frill was too thin and weak for fighting. So why evolve a three-foot shield you can't actually use in battle? Paleontologists now think this ceratopsian's enormous, heart-shaped frill wasn't for defense at all—it was for display. Brightly colored, likely used to attract mates or intimidate rivals, Chasmosaurus turned survival into an art contest. 75 million years, one purpose: pure beauty.