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physical phenomena > event > era > geological era > paleozoic era > cambrian period |
cambrian period comparison table |
Subject | is a kind of | has duration |
---|---|---|
paleozoic era | geological era | 370 million years |
cambrian period | paleozoic era | 100 million years |
Next paleozoic era: devonian period Up: paleozoic era Previous paleozoic era: silurian period