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543 million years ago to 248 million years ago. This can be divided into Cambrian, Ordovician, Silurian, Devonian, Carboniferous including Mississippian and Pennsylvanian epochs, and the Permian epoch. |
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543-490 Million years ago.
490-443 Million years ago.
443-417 Million years ago.
417-354 Million years ago.
354-290 Million years ago.
290-248 Million years ago.
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This is connected first to other sciences including physics, chemistry, astronomy, other earth science, and biology. |
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Other areas of knowledge such as Personal studies, anthropology, culture, institutions, sociology, and history will be connected as this site develops. |
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