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

Sharks, skates and catfish also have tooth-like structures called denticles that make their skin feel like sandpaper. When Haridy studied the tissues of her catfish, she saw that the denticles were ...

New research shows that dentine, the inner layer of teeth that transmits sensory information to nerves inside the pulp, first evolved as sensory tissue in the armored exoskeletons of ancient fish.

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

Teeth are sensitive because they evolved from sensory tissue in both ancient vertebrates and ancient arthropods.

The Arctic landscape during the Cretaceous Period may have been dominated by the dinosaurs, but the rivers and streams held something more familiar. Alaska's fresh waters 73 million years ago were ...

Researchers uncovered the oldest known salmon species, showing that northern fish have ancient Arctic roots dating back 73 ...

The development of odontodes in fish, which are vertebrates ... mystery of the oldest vertebrate animal that exists in the fossil record. She approached museums across the country and asked ...

once considered to be an ancient fish, was actually an arthropod. Haridy’s original aim was to solve the mystery of the oldest vertebrate animal that exists in the fossil record. She approached ...

One of those signs, at least in later fish, is the presence of dentine ... this specimen would have extended the fossil record back by tens of millions of years. “We were high fiving each ...

Most people picture the time of dinosaurs as a steamy, tropical world. But during the Late Cretaceous period, northern Alaska ...