You’re probably familiar with classic sauropod dinosaurs – the four-legged herbivores famous for their long necks and tails.

Yet Basilosaurus still retained small, weak hind legs -- baggage from its evolutionary past -- even though it could not walk on land. None of these animals is necessarily a direct ancestor of the ...

It lived on land, on the edge of lakes and riverbanks in what is now Pakistan and India. It hunted small land animals and freshwater fish, and could even hear underwater. Eventually the relatives of ...

One of the most important milestones in the evolution of life began some 400 million years ago, when the first animals made their way from water onto land. At that time, known as the Devonian ...

The very first “whales” were land animals that walked on four legs — small deer-like creatures, about the size of a house cat, that ate plants and waded around in prehistoric lagoons over 50 ...