Sensory features on the armored exoskeletons of ancient fish may be the reason why humans have teeth that are sensitive to ...

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If you've ever gotten a toothache from eating something cold like ice cream, scientists at the University of Chicago might ...

Sensory features on the armored exoskeletons of ancient fish may be the reason why humans have teeth that are sensitive to cold and other extremes.

Sallan, who was not involved in the new study, said it also raises an intriguing new hypothesis that the scalelike precursors of teeth evolved to detect prey, friends or predators in the water.