Avian origins: new analysis confirms ancient beginnings

Did modern birds originate around the time of the dinosaurs' demise, or have they been around far longer?

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<p><a href="http://www.physorg.com/news121444505.html">Avian origins: new analysis confirms ancient beginnings</a></p> <p>Did modern birds originate around the time of the dinosaurs' demise, or have they been around far longer? </p>