The Triassic period stands out in Earth’s history as the time when dinosaurs first evolved. It was followed by the Jurassic and Cretaceous periods – at the end of the latter, the dinosaurs ...

Brown period blood is normal when it's at the beginning or end of your period. But you should see a doctor if you also experience unusual pain, a foul smell, or blood clots. If you have brown ...

Related to octopuses and squid, these marine animals survived until the end of the Cretaceous period, 65 million years ago. Plants began spreading beyond the wetlands during the Devonian ...

You might know the Cretaceous Period for big animals such as Tyrannosaurus rex and ... There also would have been a thermal heat pulse that caused wildfires - that's evidenced by charcoal in the rock ...

Almost as soon as the supercontinent formed, it started to come undone. By the end of the period 199 million years ago, tectonic forces had slowly begun to split the supercontinent in two ...