Fish scales to fangs: Surprising tale of how teeth got their bite

[ahlam1399]

Fish scales to fangs: Surprising tale of how teeth got their bite
WASHINGTON (Reuters) - The origins of the enamel that gives our teeth their bite is ** ordinary fish tale.Scientists said on Wednesday fossil and genetic evidence indicates enamel did **t originate in the teeth but in the scales of ancient fish that lived more than 400 million years ago, and only later became a key component in teeth.
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