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The evolutionary origins of our pretty smile
It takes both teeth and jaws to make a pretty smile, but the evolutionary origins of these parts of our anatomy have only just been discovered, thanks to a particle accelerator and a long dead fish.
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 jawbones. Read the rest of the article.
Source: Quest
Quest – Science for South Africa is a quarterly publication of the Academy of Science for South Africa. It is a popular science magazine which is distributed to selected schools and institutions. It is also available for sale at selected Exclusive Books and CNA bookstores countrywide.
Quest – Science for South Africa is also available as a Mobi-site on your cell phone - www.questinteractive.co.za.
Go to: www.questinteractive.co.za