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Published online 13 July 2005 | Nature | doi:10.1038/news050711-8
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Dinosaurs breathed like birds
Fossil bones show air pockets for high-energy lifestyle.
Dinosaurs' hollow bones may have given them the puff to lead active lifestyles. A fossil find shows that the group of dinosaurs that included Velociraptor and Tyrannosaurus rex probably used the same super-efficient respiratory system that birds have today.
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