eoarchean
UK /ˌiːəʊ.ɑːˈkiːən/ US /ˌiːoʊ.ɑɹˈkiːən/
adj 1name 1
Definitions
adj
1
Of a geologic era within the Archaean eon from about 4600 to 3600 million years ago; the first single-celled life began at this time.
name
1
The era from 4,000 Ma to 3,600 Ma.
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