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Nature World: It has long been thought by scientists that birds' one-directional loop through their lungs was a unique characteristic, but a new study shows that lizards too may share this type of breathing.
If University of Utah researchers are accurate with their findings, it would mean this unidirectional flow evolved long before the first birds, arising nearly 300 million years ago in a common ancestor of lizards, snakes, crocodiles and dinosaurs including birds.
"We thought we understood how these lungs......
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Why Lizards Have Bird Breath
Posted by Nature World: None Given on November 18th, 2014
Posted in Water Conservation