From Maine to Florida, the endangered, prehistoric fish is rebounding, but a recent study shows just how vulnerable the U.S.

Texas is home to a large and diverse range of animal species, however some of them are considered rare or infrequently ...

In the 460-million-year-old Eriptychius, the researchers found large, open pulp cavities and branching dentin tubules — an ...

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.

The massive Megalodon had a staggering 100,000 kilocalories-per-day nutritional demand—which it didn't always fill as ...

In recent years, however, clues to their possible identity began to amass. Researchers found strikingly similar winding networks in rocks much younger than the Little Dal reef in several locations.

Contrary to widespread assumptions, the largest shark that ever lived -- Otodus megalodon -- fed on marine creatures at various levels of the food pyramid and not just the top. Scientists analyzed the ...

Hundreds of millions of years ago, fish had sensory features on their exoskeletons that contained dentine, the material that makes our teeth sensitive today ...

He reported that fossils of mammoths and mastodons, which roamed North America until 10,000 years ago, were found near the Big Bone Lick in Union, Kentucky. The warm salt springs had been an inviting ...

Human teeth evolved from the ancient sensory armor of fish over 460 million years ago, revealing a surprising link between ...

A new study published in Nature traces the evolutionary origin of human teeth to sensory structures found on the exoskeletons ...