The fossil whorls were a mystery. In 1899, geologist Alexander Karpinsky described an odd spiral of teeth, the first known fossil of its kind, uncovered from the ancient rocks of Krasnoufimsk, Russia.

NEW YORK — A big catch of fish fossils in southern China includes the oldest teeth ever found — and may help scientists learn how our aquatic ancestors got their bite. The finds offer new clues about ...

CT scan of the front of a skate, showing the hard, tooth-like denticles on its skin (shown in orange). Credit: Yara Haridy CT scan of the front of a skate, showing the hard, tooth-like denticles on ...

Ever wonder why teeth hurt? Blame it on a prehistoric armored fish. While the outer layer of our teeth is coated in hard enamel, it’s the inner layer, called dentine, that feels pain. Dentine carries ...

Our sensitive teeth originally evolved from the "body armor" of extinct fish that lived 465 million years ago, scientists say. In a new study, the researchers showed how sensory tissue discovered on ...

A new study has revealed that teeth, as we know them today, didn’t evolve for chewing or biting, but for sensing the environment around ancient fish. This discovery pushes the timeline of vertebrate ...

The fossil is estimated to be about 100 million years old. — -- The skeleton of a 100 million-year-old fish "with an incredibly swordfish-like head and monstrous teeth" has been unearthed in the ...

Fossils over 300 million years old reveal the evolution of a tongue bite in an ancient group of deep-bodied ray-finned fishes, such as Platysomus parvulus. Experts have uncovered the earliest known ...