美国国家公共电台 NPR--Imagine a T-rex — now think about its mouth. Did you imagine scary teeth?（在线收听）

Imagine a T-rex — now think about its mouth. Did you imagine scary teeth?

Transcript

Research suggests that contrary to popular belief, the T-rex did not have rows of exposed teeth — it had lips that covered those teeth. Some scientists disagree and insist that the T-rex is lipless.

A MART?NEZ, HOST:

Good morning. I'm A. Martínez. Imagine a T. rex. Now think about its mouth. You probably imagine lots of scary-looking teeth. But research suggests that, contrary to popular belief, the T. rex did not have rows of exposed teeth. It had lips that covered those teeth. Some scientists disagree with this hypothesis and insist that the T. rex is lipless. But a T. rex with lips just seems so much more kissable? It's MORNING EDITION.