Discovery raises new doubts about dinosaur-bird links

Researchers at Oregon State University have made a fundamental new discovery about how birds breathe and have a lung capacity that allows for flight - and the finding means it's unlikely that birds descended from any known theropod dinosaurs.

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<p><a href="http://www.physorg.com/news163760732.html">Discovery raises new doubts about dinosaur-bird links</a></p> <p>Researchers at Oregon State University have made a fundamental new discovery about how birds breathe and have a lung capacity that allows for flight - and the finding means it's unlikely that birds descended from any known theropod dinosaurs.</p>