ABIOTIC

The world did not always look the way it does today, so what did it look like? For starters all of the land (including the Arctic ) was close to the equator. Every piece of land had a warm, tropical climate with oxygen levels up to 40 percent higher than they are today. The Earth was still shifting though, the Earth had two "super-continents" named Gondwana and Laurasia (also known as Laurentia). Laurasia was made up of what we know today as North America and Northern Europe. It was set on a collision course with Gondwana which was made up of all of the rest of the land. Our world did not just appear here the way it is today and the Devonian time period was a very important part of its history. Continents shifted, climates changed, oxygen levels dropped and oceans rose and fell, there is more to history than what meets the eye all scientists had to do was follow the clues.