A new species of fossil from 444 million years ago that has perfectly preserved insides has been affectionately named "Sue" ...

In place of oxygen, the ocean was full of hydrogen sulfide, which the researchers believe may have caused the organism to ...

Stanford scientists found that dramatic climate changes after the Great Dying enabled a few marine species to spread globally ...

After Earth's worst mass extinction, surviving ocean animals spread worldwide. Stanford's model shows why this happened.

A rare fossil from 444 million years ago, which belonged to a previously-undiscovered species, has been named "Sue" after the ...