Air cavities in dinosaur bones show clear evolutionary link to birds

Paleontologists have found the first strong evidence of a bird-like respiratory system in alvarezsaurs, a group of small, carnivorous dinosaurs that lived during the Late Cretaceous Period (about 70 to 66 million years ago), just before the extinction of the dinosaurs. The study was published in the scientific journal PLOS ONE. The research team studied fossils of Bonapartenykus ultimus, […] More science? Read the latest articles on Scientias.nl…