Precambrian period

Noun

1.

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 Synonyms: Precambrian, Precambrian aeon, Precambrian eon

aeon, Archaeozoic, Archaeozoic aeon, Archean, Archean aeon, Archean eon, Archeozoic, Archeozoic eon, eon, Precambrian, Precambrian aeon, Precambrian eon, Proterozoic, Proterozoic aeon, Proterozoic eon

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