sharks

Fish Scales and Vertebrate Teeth Share an Embryonic Origin

Biologists have debated whether ancient fish scales moved into the mouth once jaws emerged...

Shark Genes Offer Clues to Tooth Regeneration

Sharks are infamous for their ability to regrow teeth throughout their lifetime, while human...

Shark Teeth as Hard as Human Teeth

Shark teeth and human teeth are quite similar, according to a new study. A...

Little Shark’s Odd Jaw Takes Big Bites

The name "cookiecutter shark" refers to its feeding habit of gouging round plugs, like...