"I'm stunned." says Per Ahlberg of Uppsala University, who coordinated the study; "A single track-bearing slab, which one person can lift, calls into question everything we thought we knew about when ...

If you want to see concrete evidence of evolution, look no further than your hand or your foot. Five fingers, five toes. There's nothing magical about the number, yet five digits at the end of their ...

Lost species are those that have not been observed in the wild for over 10 years, despite searches to find them. Lost tetrapod species (four-limbed vertebrate animals including amphibians, birds, ...

Here’s what you’ll learn when you read this story: The common ancestor of all tetrapods (including humans) was previously thought to have emerged at the dawn of the Carboniferous period. Fossilized ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Millions of years before Tyrannosaurus rex stalked the Earth, a ...

The origin of four-limbed animals known as tetrapods was thought to be fairly straightforward: Fish flopped onto land in the Devonian, evolved, and eventually diversified into the reptiles, birds, ...

Thomas Evans received funding from The Alexander von Humboldt Foundation. Lost species are those that have not been observed in the wild for over ten years, despite searches to find them. Lost ...