Welcome to the Paleozoic Era. This era lasted from 544 million years ago to 245 million years ago.
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The ancient continents south of the equator about 544 million years ago was known as Pangaea. (pan-gee-a)
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An ice cap is a glacier, a thick layer of ice and snow, that covers fewer than 50,000 square kilometers. The ice cap that covered North America formed about 505 million years ago.
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When the Euramerica continent smashed into Godwanaland ( The super continent, A super continent is one giant continent that is all connected.) that pushed up the land to create what is now the Appalachian Mountains. This was about 360 million years ago.
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Scientists now believe that about 250-280 million yeas ago a super continent known as Pangaea existed, thanks to Alfred Wegner.