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

Scientists have discovered fossils in China that reveal a crucial transition from simple to complex life on Earth ...

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 ...

Animal life began in aquatic environments more than 600 million years ago. Around 500 million years ago, during the Cambrian ...

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

(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 ...

For more than 500 million years, sea creatures have been getting bigger — much bigger as it turns out, according to a study by scientists who say that the evolutionary trend toward larger body size ...