Add Yahoo as a preferred source to see more of our stories on Google. New research finds chemical fossils from sponges in rocks over 541 million years old, suggesting animals emerged earlier than once ...

Fossils of a tiny sea creature that lived 525 million years ago have preserved something paleontologists rarely find: a brain ...

The ocean is full of surprises, and scientists are still finding creatures that seem almost unreal. From tiny reef animals to bizarre deep-sea species, these discoveries show just how much of the ...

A team of MIT geochemists has unearthed new evidence in very old rocks suggesting that some of the first animals on Earth were likely ancestors of the modern sea sponge. In a study appearing today in ...