Social media users appreciated the clarification. Scientist debunks harmful misinformation about Earth's history: 'I decided ...

The Phanerozoic Eon is divided into the three eras. The oldest is the Paleozoic Era, which means ‘ancient life’ and occurred between 541 and 252 million years ago.

I am interested in understanding how marine ecosystems responded to major biological and environmental changes of the past, particularly those associated with global warming and the mass extinction ...