In a first, scientists spot what may be lungs in an ancient bird fossil

But some paleontologists aren’t convinced the preserved structures are respiratory organs

Archaeorhynchus spathula

MAIN SLAB  Archaeorhynchus spathula was a beaked, feathered bird that lived 120 million years ago. A new fossil discovery suggests it had a respiratory system similar to that of modern birds. 

J. Zhang/IVPP Beijing

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