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The Precambrian Period lasted for about 4 billion years and ended about 600,000,000 years ago. It is the earliest geological period and is divided into the Archaeozoic and Proterozoic epochs. It was during this time that earliest forms of life were assumed to be just starting off on earth. The fossil record does not extend back that far, but it would be reasonable to assume that some basic plant life and single cell life forms did not evolve any further.

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15y ago
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14y ago

Cyanobacteria existed during the Archean Era. Some sites may say stromatolites but in truth, stromatolites are simply structures formed by the cyanobacteria.

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12y ago

First of all evolution doesen't work there's to many problems second of all what the heck is Archean

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Q: What animals and plants became extinct during the Precambrian era?
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Related questions

When did the ediacaran fauna exist?

The ediacaran fauna lived during Precambrian time and became extinct then, too. Nobody knows for sure why, but trilobites might have caused their disappearance.


Which era did the ediacaran live in?

The ediacaran fauna lived during Precambrian time and became extinct then, too. Nobody knows for sure why, but trilobites might have caused their disappearance.


Which era did the ediacaran fauna live?

The ediacaran fauna lived during Precambrian time and became extinct then, too. Nobody knows for sure why, but trilobites might have caused their disappearance.


What major change occurred in the atmosphere during the precambrian?

The atmosphere, during the Precambrian became richer in oxygen caused by a bacteria called cyanobacteria.


What happened to many land and sea animals during Paleozoic era?

Many of the animals began to die off and became extinct.


What animals existed during the Precambrian Time?

jellyfish-like animals, sea pen, and bacteria.


What are some important events that happened during the Precambrian era?

It is very empty and only single-celled organisms were present in the Precambrian era. No animals were living on land because of the poisonous gas in the air.


How did the hyenadon become extinct?

The hyenadon became extinct during the start of the Oligocene. There was a mas extinction event that was called Grande Coupure and causes temperatures to decline and killed many species of animals.


When were precambrian rocks formed?

During the precambrian.


What are some events that happen during the precambrian era?

life arose and the atmosphere became enriched in oxygen


How did pteranodon become extinct?

A pteranodon is a pterosaur, or a flying dinosaur. During the fall of the dinosaurs, all dinosaurs became extinct, including the pterosaurs.


When did the megatherium live?

the megatherium went extinct about 8,000 years ago