Until now, there was a conflict in the field of paleontology. Genetic analysis of how fast traits mutated and evolved ...

A fossil bed in China containing animals up to 554 million years old suggests that we may have to reconsider the idea that ...

Newly discovered fossils have given scientists their first real glimpse of when Earth made a crucial transition from plants and unrecognizably simple animals to the complex creatures that ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The story of two of ...

A microorganism whose evolutionary roots can be traced to the era of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In ...

Newfound fossils from China suggest that complex animals were around millions of years earlier than thought, among them ...

The transition from water to land is a question that still intrigues scientists. Those ancient organisms would have needed to ...

A pattern emerged. We discovered that eyes and light-sensing cells are consistently found at two separate locations: paired ...

Add Yahoo as a preferred source to see more of our stories on Google. Once upon a time, there were a bunch of one-celled microbes, swimming, eating, reproducing, doing all the things that a one-cell ...

(CNN) — The story of two of the strangest animals on the planet just got a little stranger, thanks to clues revealed by a lone fossil specimen that scientists now say represents a long-extinct ...

To understand the origins of multicelled life, researchers are studying a motley assortment of simpler animal relatives. The commonalities they’re unearthing offer a trove of clues about our mutual ...