Precambrian

(Pronunciation -تلفظ سنیۓ ) US:

Slow

Normal

Noun: Precambrian

1. Precambrian [ Synonyms: precambrian aeon, precambrian eon, precambrian period]
The eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago

Parts of Precambrian:

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