There are well-known examples of animals evolving from land to water — for example, it is believed that dolphins and whales evolved from land animals and share lineage with hippos. But there are ...

WASHINGTON, April 29 (Reuters) - After the demise of the dinosaurs following an asteroid strike 66 million years ago, mammals became Earth's dominant land animals. But that does not mean they went ...

A visualization of Tiktaalik roseae, an extinct aquatic animal with fossils that shed light on the evolution of land animals from marine animals millions of years ago. Nobu Tamura via Wikimedia ...