The 6 Largest Extinction Events On Earth And When They Occurred
Previous extinction events are evidenced in our history and the fossil record. An extinction level event is a natural path to extinction but on a massive scale. In the last 500 million years, there have already been six extinction-level events. Below are the six extinction events that have already happened on our planet: 1. The Ordovician to Silurian Extinction Significant changes in the environment happened during the Ordovician period. This took place 485-444 million years ago....