Definitions
There is 1 meaning of the phrase
Archean Aeon.
Archean Aeon - as a noun
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 (Exact Relations)
archaeozoicarchaeozoic aeonarcheanarchean eonarcheozoicarcheozoic eon