SILURIAN+by+The+Intriguing

= The Silurian =

==== 438-408 millions years ago is was the time period of the Silurian. The [|Silurian] period has the first jawless and the first native plants (Cooksonia).Before this period it was the [|Ordivician] period. In this this period the second mass extinction happend all so the second ice age happend during this period. After this period it was the Devonian period (the age of fishes). In this period there were the first forestes and the first amphibians. The climate was hot during the Silurian period. In this period the glaciers starting melting. ====

Abiotic
The climate was very humid and wet. All the huge glaciers from the Ordovician period began to melt because of the weather.Shallow seas replaced the large glaciers, were organisms could develop. That is why the first fish could thrive and the first plants began to grow. The continents Laurentia and Baltica were in the Silurian period. Millions of years ago New England formed from strips of land called exotic terranes. One exotic terrane was the Avalonia. This exotic terrane was from Africa and Gondwanda. Later the continents Laurentia and Baltica collide.

Landforms
It is mainly formed by Gondwanda. By the Sulurian period, a huge amount of the Rodinian landmass had been broken into little pieces. A lot of these broken pieces eventually turned into the super-continenets that we know as Laurussia and Laurasia. The conditions in the Silurian period were very different from the environment today, for example, the high sea level and low continental elevations back in the Silurian period, are the exact opposite from the elevations today. Because the seas were so high and the land was so low there were many floods, for example when 65% of seas in North America flooded during the Llandovery and Wenlock times.

Biotic
In the Silurian period it had many creatures. We had jawless fish, and sea scorpions. The sea scorpions were the rulers of the water. The biggest sea scorpion was the ( // __Pterygotus__  // ). It was at least the size of a couch which is at least 6 feet. This sea scorpion had a stinger with body armor. This animal had a exoskeleton that protected it. The first plants were the (Cooksonia) plant. Reaserchers show that insects and plants did not grow together because insects evolved mouth guards before plants were native on land.

Reflection I chose the Silurian period because i thought that this period would have many cool exotic fish. I also chose this period because i wanted to learn about the ancient sea life.