Monday 22 October 2012

Anatomy Behind Our Smiles Cracked

Evolutionary origins of the anatomy that makes a pretty smile have been discovered by scientists. All living jawed vertebrates (animals with backbones, such as humans) have teeth, but it has long been thought that the first jawed vertebrates lacked pearly gnashers, instead capturing prey with gruesome scissor-like jaw-bones. However, new research, led by the UK's University of Bristol, shows that these earliest jawed vertebrates possessed ...

via Medindia Health News More READ

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