Scientists revisiting mysterious 540-million-year-old microfossils from Brazil have overturned a major idea about early ...

A reexamination of microfossils found in the Brazilian state of Mato Grosso do Sul shows that the marks previously interpreted as traces of worms or other small oceanic animals are actually ...

For more than a century, the Cambrian explosion has served as biology’s big bang: the moment, roughly 538.8 million years ago ...

Researchers uncovered compelling evidence that Earth's magnetic field was in a highly unusual state when the macroscopic animals of the Ediacaran Period -- 635 to 541 million years ago -- diversified ...

An international team of researchers is claiming to have discovered the world’s oldest footprints. Dating back a whopping 550 million years and found in a limestone bed in China, the prints were made ...

Add Yahoo as a preferred source to see more of our stories on Google. Over 500 million years ago, the ancestors of a diverse group of animals known as Ecdysozoans existed. This group includes various ...

Stay on top of what’s happening in the Bay Area with essential Bay Area news stories, sent to your inbox every weekday. The Bay Bay Area-raised host Ericka Cruz Guevarra brings you context and ...

Aug. 21 (UPI) --New fossil analysis suggests the planet's earliest known animals emerged at least 571 million years ago. The new study -- published this month in the journal Paleontology-- proves ...

Around 540 million years ago, the oldest ancestors of almost every living creature on Earth burst onto the scene during an orgy of evolution known as the Cambrian Explosion. Unlike the single-celled ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Why did some of Earth's earliest complex organisms start to grow larger ...