The fossil of a mammal ancestor dating back approximately 165 million years contains a hyoid bone similar to those found in mammals living today, according to findings published in Science. The hyoid in modern mammals helps in chewing and swallowing, and the fossil hyoid could point to a key reason for mammals' evolutionary success, researchers say.
Sign up for Sigma Xi SmartBrief
News on scientific research and innovation
Get the intelligence you need: news and information that is changing your industry today, hand-curated by our professional editors from thousands of sources and delivered straight to your inbox.