That zing in your teeth from a cold treat? Blame this ancient armored fish - NPR

1. That zing in your teeth from a cold treat? Blame this ancient armored fish  NPR
2. The origin of vertebrate teeth and evolution of sensory exoskeletons  Nature
3. Our teeth evolved from fish 'body armor' over 460 million years, scientists discover  Live Science
4. The first teeth were sensory organs on the skin of ancient fish  New Scientist
5. Study Finds the Strange Origin of Human Teeth—And It’s Not the Mouth  Men's Journal

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