 But it's a reasonable question. But they're still cool because over the years, researchers have found five distinct ceratops there, which shows how diverse the horned dino population was and how they were rapidly evolving. Mark and another co-author, Joseph Surdage, told me that where most dinosaur species live for around 2 million years, these fast-evolving ceratops species might only have existed for 200,000 years. So among this new family of ceratops, what makes Loki ceratops different from the others?