Time duration | Major event | |
Precambrian era | 4500 my - 570 my ago | Evolution of earth |
Paleozoic era | 570 my - 250 my ago | Development of pteridophytes, marine invertebrates. |
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Mention the time period of Proterozoic period and Paleozoic era and give one major event of each era.
Time duration | Major event | |
Precambrian era | 4500 my - 570 my ago | Evolution of earth |
Paleozoic era | 570 my - 250 my ago | Development of pteridophytes, marine invertebrates. |
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