A newly described species from the Burgess Shale had three eyes, clawed limbs, and a tail full of gills—plus internal organs preserved in stunning detail.

Anyone who has ever squirmed through a dental cleaning can tell you how sensitive teeth can be. This sensitivity gives ...

A new study from the University of Chicago suggests our sensitive teeth may be an evolutionary leftover that once helped our ...

Learn why both human teeth and an ancient fish contain a key sensory substance — but in different locations.

Sharks, skates and catfish also have tooth-like structures called denticles that make their skin feel like sandpaper. When ...

New research from the University of Chicago reveals that teeth may have evolved from sensory armor in ancient fish.

A fossil once believed to reveal the origin of mollusks turns out to belong to one of Earth’s weirdest ancient creatures ...

Paleontologists have discovered that a three-eyed sea moth predator lived on Earth half a billion years ago with evidence found in one of the most fossil-rich areas of the world.

A newly discovered arthropod fossil, Mosura fentoni, has preserved eyes, nerves, and blood vessels - a rare insight into early arthropods.

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

More than 500 million years before “The Simpsons” introduced us to Blinky, a fish with an extra eye swimming through ...

The fossil, named Shishania aculeata, hails from 500-million-year-old Cambrian deposits in Yunnan Province, southern China, a region world-renowned for its remarkably preserved snapshots of ...