Archaeozoic aeon

Definitions of Archaeozoic aeon
1

n the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life

Synonyms:
Archaeozoic, Archean, Archean aeon, Archean eon, Archeozoic, Archeozoic eon
Example of:
aeon, eon
the longest division of geological time

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