List each of the Eras of Earth’s history. Choose 2 periods from each of the Era’s and explain how events in those periods were important to the history of life on our planet.
In the Paleozoic Era, the two periods that I think are important are the Devonian Period and the Permian Period. During the Devonian Period in the Paleozoic Era, plants evolved into plants that could survive in drier areas. Seas also rose and fell over current-day North America. I think the Devonian Period is important because early amphibians began to develop. It is also considered the Age of the Fishes. The Devonian Period had a lot of fishes being developed and discovered. The Permian Period is also very important. During the Permian Period, a lot of landmass formed by our continents and was called Pangaea. The Permian period was ended by the largest mass extinction in all of mankind. The mass extinction wiped out 90% of Earth’s marine animals and 70% of Earth’s land animals. Some scientists believe that it is, “the worst extinction event in the planet's history” and I disagree, I do not want dinosaurs to still be roaming.
In the Mesozoic Era, the two periods that I think are important are the Jurassic and Cretaceous Periods. During the Jurassic Period, dinosaurs evolved into land, water, and air. The Jurassic Period is also referred to as the Age of Dinosaurs. The earliest bird, Archaeopteryx, took to the skies late in the Age of Dinosaurs. The reason I picked this period is because I find dinosaurs very fascinating. Dinosaurs became just like humans, the dominant species, just earlier and bigger. During the Cretaceous Period, another popular mass extinction happened about 65 million years ago. So, dinosaurs still roamed during this period but they died off this time. The Cretaceous Period is very interesting. Scientist hypothesis that a large asteroid impacted Earth near New Mexico; formed the Gulf of Mexico.
In the Cenozoic Era, the last and current era, I think...