Fossil Scans Reveal Origins of Teeth

Tooth-like structures have been found to originate from outer-body coverings
Posted: October 16, 2013 / Source: Scientific American

Which came first: fangs or bony armor? For years, paleontologists have thought that the first bones to emerge were teeth, and that the protective armor coverings of early fish, made of similar material, followed. But now, a study reveals that the truth is the other way around.

Read more here:http://www.scientificamerican.com/article.cfm?id=fossil-scans-reveal-origins-of-teeth
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