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Searched for 'Precambrian' |
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Encarta Answers  | Precambrian: Span of time starting at the beginning of geologic time, when rocks first formed, and extending to the beginning of the Cambrian Period about 542 million years ago, when multicellular life first became abundant. Earth’s oldest known rocks have been dated at just over 4 billion years old. |
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Windows Live® Search Results- Precambrian - Wikipedia, the free encyclopedia
The Precambrian (Pre-Cambrian) is an informal name for the supereon comprising the eons of the geologic timescale that came before the current Phanerozoic eon. - The Precambrian
T he D ivisions of P recambrian T ime You can find out more about the Precambrian by clicking on the chart below! 4.5 billion years ago, the Earth was born. - Precambrian
More Info. Late Precambrian Supercontinent and Ice House World. This map illustrates the break-up of the supercontinent, Rodinia, which formed 1100 million years ago.
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