Moontanman Posted February 19, 2009 Report Posted February 19, 2009 Air-filled Bones Extended Lung Capacity And Helped Prehistoric Reptiles Take First FlightScienceDaily (Feb. 18, 2009) — In the Mesozoic Era, 70 million years before birds first conquered the skies, pterosaurs dominated the air with sparrow- to Cessna-sized wingspans. Researchers suspected that these extinct reptiles sustained flight through flapping, based on fossil evidence from the wings, but had little understanding of how pterosaurs met the energetic demands of active flight. Air-filled Bones Extended Lung Capacity And Helped Prehistoric Reptiles Take First Flight Quote
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