Is It Time to Declutter The Dinosaur Roster?

摘要

BOLOGNA, ITALY—There are too many dinosaurs in the world, and John Horner says it's time to start culling the herd. Horner has nothing against the ancient reptiles; as a paleontologist at Montana State University, Bozeman, he has discovered several new species of them himself and even has two named after him. But he worries that—with almost 1000 types of dinosaurs on record and a new species being named somewhere in the world every 2 weeks—too many supposedly new discoveries are actually duplicates of animals already on the books.