Yes it was
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The Precambrian Era began in the time period 4600 and ended in 570.
About 540 million years ago.
There is some debate among experts, but it is generally accepted that the Precambrian lasted from 3.9 to 4 billion years. This time period is made up of three eras which are the Paleoproterozoic, the Mesoproterozoic, and the Neoproterozoic era.
In the paleolithic era.
It began 4.6 billion years ago and ended 544 million years ago.