4600 Mya to 542 Mya.
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The Precambrian era spans from about 4.6 billion years ago to 541 million years ago, encompassing almost 90% of Earth's history. It is divided into three eons: the Hadean, Archean, and Proterozoic eons.
Precambrian
Precambrian !!!
The 4 eras are Cenozoic era, the mesozoic era, the paleozoic era, and the precambrian era.
Because it was created in the precambrian era...The Candadian Shield was formed in the Precambrian Era.The rocks of the Canadian Shield formed during the Precambrian time.
Precambrian Era.