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About 540 million years ago.
What else can I help you with?
Why did the precambrian end?
The Precambrian ended about 541 million years ago.
When did the precambrian era begin?
The Precambrian Era began in the time period 4600 and ended in 570.
Why did precambrian end?
The Precambrian ended about 541 million years ago.
How did the Precambrian Era end?
The Precambrian Era ended around 541 million years ago with the Cambrian Explosion, a period of rapid diversification of life forms. This marked the transition to the Phanerozoic Eon, characterized by the emergence of complex multicellular organisms.
When were precambrian rocks formed?
During the precambrian.
Do you have written records from the Precambrian era?
No. The Precambrian era pre-dates the origin of complex life on earth.Humans (modern Homo sapiens) appeared around 200,000 years ago which is approximately 500 million years after the Precambrian ended. Also humans didn't develop "writing" until several thousand years ago (approx 6600 years BC).As such there can be no written record of the Precambrian.For more information about the Precambrian, please see the related link.
What event marked the end of the Precambrian Era?
The Precambrian Era ended with the beginning of the Cambrian Period, approximately 541 million years ago. This period is characterized by the sudden appearance of a diverse range of complex life forms in the fossil record, known as the "Cambrian explosion".
Historians know least about era do?
**Precambrian**
When did the precambrian era begin and end?
It began 4.6 billion years ago and ended 544 million years ago.
What started the precambrian era?
The Precambrian period really doesn't have an upper boundary. When the earth was made it was too hot to keep a crust. The Hadean basically started with the sun exploding. The formation of the oldest rock stared the Archean era as we know it. The fossils of visible life ended it.
What is the mineral composition of precambrian?
The Precambrian is a geological age, not a mineral.
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.
