When did the enamel that covers our teeth evolve? And where in the body did this tissue first appear? In a new study, researchers combined data from two very different research fields -- paleontology and genomics -- to arrive at a clear but unexpected answer to this question: enamel originated in the skin and colonized the teeth much later.
from Strange & Offbeat News -- ScienceDaily http://ift.tt/1NMV0bb
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