A new study reveals that the sensitivity of teeth, which makes them zing in a dentist's chair or ache after biting into something cold, can be traced back to the exoskeletons of ancient, armored fish.

The sometimes uncomfortable sensations we feel in our teeth may be an evolutionary holdover from the scaly exteriors of ...

The alligator gar is a massive, ancient fish found in U.S. rivers and lakes. With its armor-like scales and gator-like snout, it looks terrifying—but it plays a vital role in freshwater ecosystems.

HARIDY: Thought to be the scales of this ancient fish-like thing. DANIEL: Forming a kind of armor - the Anatolepis fragments hadn't been imaged in detail before, so Haridy and her team booked time ...

Scales are small, hard plates that protect an animal's skin. Learn all about the 12 types of animals with scales here!

That’s because it’s just a smattering of these tiny bumpy flakes, “thought to be the scales of this ancient fish-like thing,” forming a kind of armor. Because the Anatolepis fragments hadn ...

New research from the University of Chicago shows that dentine, the inner layer of teeth that transmits sensory information ...

“So, there’s sensitive armor in these fish. There’s sensitive armor in ... that hard tissues like dentine and structures like scales and teeth evolved (primarily) for protection on the ...