Paleoarchean

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Paleoarchean era
Geologic timescale of the Precambrian
(millions of years ago)

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The Paleoarchean (IPA: /ˌpeɪlɪəʊɑːˈkiːən/, also spelled Palaeoarchaean) is a geologic era within the Archaean. It spans the period of time 3600 Ma to 3200 Ma (million years ago)—the period being defined chronometrically and not referenced to a specific level in a rock section on Earth. The oldest ascertained life form (Well-preserved bacteria older than 3460 million years found in Western Australia [1]) is from this era.


Archean eon
Eoarchean Paleoarchean Mesoarchean Neoarchean
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