Air-filled bones helped prehistoric reptiles take first flight

New international research involving the University of Leicester published today sheds new light on how prehistoric reptiles took to the air. In the Mesozoic Era, 70 million years before birds first took wing, pterosaurs dominated the skies with sparrow to aeroplane-sized wingspans. Scientists already knew, on the basis of fossil evidence from the wings, that these extinct reptiles were able to power their flight through flapping, but had little understanding of how pterosaurs met the high energetic requirements for flight...

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