Ordovician Period Essay
The first geological period during the Paleozoic Era was the Cambrian period. This period took place roughly around 542 to 488.3 million years ago. During this period was when most animal groups stared to appear in fossils. This was also the time were the earth had one super continent, which was called Rodinia. The climate during this period was mild and the oceans were beginning to become oxygenated (The Cambrian Period).
The second geological period during the Paleozoic Ear was the Ordovician period. This period took place roughly around 488.3 to 443.7 million years ago. The Ordovician period is mostly known its various marine invertebrates. The climate during this period seemed to be mostly cold. At the time most of the lands were combined into one super continent, which was called
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This period took place roughly around 542 to 488.3 million years ago. During this period was when most animal groups stared to appear in fossils. This was also the time were the earth had one super continent, which was called Rodinia. The climate during this period was mild and the oceans were beginning to become oxygenated (The Cambrian Period).
The second geological period during the Paleozoic Ear was the Ordovician period. This period took place roughly around 488.3 to 443.7 million years ago. The Ordovician period is mostly known its various marine invertebrates. The climate during this period seemed to be mostly cold. At the time most of the lands were combined into one super continent, which was called Gondwana (The Ordovician Period).
The third geological period during the Paleozoic Era was the Silurian period. This period took place roughly around 443.7 to 416 million years ago. The Silurian period was when we started finding clear evidence of life on earth. The climate during this period often ranged from tropical to subtropical and had very high rises in sea levels (The Silurian
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