New meat-eating dinosaur from Argentina had bird-like breathing system

Tuesday, September 30, 2008 - 10:14 in Paleontology & Archaeology

Flesh rendering of the 85 million-year-old meat-eater, Aerosteon ("air bones"), discovered in Mendoza Province, Argentina. More than any other dinosaur, Aerosteon helps to prove that dinosaurs breathed like birds with air sacs and stiff bird-like lungs. Credit: Drawing:Todd Marshall c 2008, courtesy of Project Exploration The remains of a new 10-meter-long predatory dinosaur discovered along the banks of Argentina's Rio Colorado is helping to unravel how birds evolved their unusual breathing system.

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