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Proterozoic era |
Also found in: Wikipedia, Hutchinson | 0.02 sec. |
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Proterozoic era: see Precambrian era Precambrian era, name of a major division of geologic time (see Geologic Timescale , table), from c.5 billion to 570 million years ago. It is often divided into the Archeozoic and Proterozoic; in other countries, the Precambrian is broken into other divisions, ..... Click the link for more information. . How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| 2 billion years ago, during Earth's Proterozoic era. If the hours seem to streak by and each day ends too quickly, stop a moment and consider the tempo of time during the Proterozoic era, 900 million years ago. Then sometime during the late Proterozoic era, about 580 million years ago, life got big. |
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