Scientists are debating the Earth's first creature, with evidence pointing to simple, sponge-like organisms emerging around ...

For millions of years, the land we now call the United States has been home to towering prehistoric beasts, strange sea creatures, and lush ancient forests that no longer exist. Evidence of this ...

Scientists have made a jaw-dropping discovery, a 520-million-year-old fossil that has preserved not just its body, but its ...

MIT researchers traced chemical fossils in ancient rocks back to the ancestors of today’s demosponges. A team of geochemists ...

The Great Canyon is a tourist attraction that was once upon a time home to a variety of creatures. After 500 million years, a ...

A new study sheds light on how these reptiles become “mummies” and paints a picture of what these ancient animals looked like. Paul Sereno and his colleagues spent years painstakingly preparing this ...