Archaeozoic aeon

Thesaurus

Noun

1.

Archaeozoic aeon - the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life Archaeozoic, Archean, Archean aeon, Archean eon, Archeozoic, Archeozoic eon Precambrian, 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

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