New research shows that the earliest sponges were soft bodied and lacked skeletons, explaining why their oldest fossils are ...

Sponges may be ancient, but their timeline has been murky. New research suggests the earliest sponges were soft and ...

Scientists say a Chinese fossil site offers the first major look at life after the Sinsk mass extinction.

Tyrannoroter heberti fossil shows one of the earliest land animals to eat plants, changing what we know about how ...

Animals living about 500 million years ago spent time on mudflats that were periodically exposed to the air. The finding suggests that some of the earliest animals were able to survive outside of ...