Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...

Perhaps initiated by heat building up underneath the vast continent, Pangaea began to rift, or split apart, around 200 million years ago. Oceans filled the areas between these new sub-continents.

Over two hundred fifty million years ago, India, Africa, Australia, and South America were all one continent called Pangea. Over the next several million years, this giant southern continent ...

During the wet season, megamonsoons swept across Pangaea and turned dry-season streamlets into thunderous, roiling rivers. One rainy season more than 200 million years ago, an enormous volcano ...

Around 250 million years ago, all of the continents were joined together as one supercontinent called Pangea. Over time ... That means it would take around 200 million years to add an hour ...