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What was the longest segment of the earth's history?

It was the Precambrian time period.


When was Lifeform - comics - created?

Lifeform - comics - was created in 1990.


Why is the shield also referred to as the Precambrian Shield?

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.


Why is the Canadian Shield also referred to as the Precambrian Shield?

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.


Why is the Canadian Shield also referred as the Precambrian Shield?

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.


Which is the largest of time on the geologic time scale?

The Precambrian


geologic time with poorest fossil record?

Precambrian time.


What is the largest divisions of geological time?

The Precambrian.


What time spans occurred first?

Precambrian


When did Precambrian Time begin?

The Precambrian period was from 4600 million years ago to about 542 million years ago.


Which major division on geologic time came first?

Precambrian time


What is the time range of Precambrian Era?

Precambrian time - The period in the geologic time scale from the formation of the Earth to the beginning of the Palezonoic era, from about 4.6 billion to 543 million years ago.