Tooth Enamel Originated on the Scales of Ancient Fish, New Study Finds - University Herald

Enamel, the ultra-tough coating protecting humans' teeth, evolved from the scales of ancient fish.

According to The Los Angeles Times, authors of a study published in the journal Nature made this conclusion by studying the DNA of living creatures, as well as fossils of fish that had scales with a makeup similar to tooth enamel. The scientists found a link in the tissue of the fish's scales and enamel.

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