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・ Paleo Trikeri
・ Paleo-Arctic Tradition
・ Paleo-Balkan languages
・ Paleo-Balkan mythology
・ Paleo-Balkans
・ Paleo-Eskimo
・ Paleo-European
・ Paleo-European languages
・ Paleo-Hebrew alphabet
・ Paleo-Indians
・ Paleo-orthodoxy
・ Paleo-Sardinian language
・ Paleo-Tethys Ocean
・ Paleoamphiuma
・ Paleoanthropology
Paleoarchean
・ Paleoart
・ Paleoatmosphere
・ Paleobiology
・ Paleobiology (journal)
・ Paleobiology Database
・ Paleobiota of the Chinle Formation
・ Paleobiota of the Morrison Formation
・ Paleobiota of the Niobrara Formation
・ Paleobiota of the Solnhofen Formation
・ Paleobiota of the Yixian Formation
・ Paleoboa
・ Paleobotany
・ Paleocadmus
・ Paleoceanography


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Paleoarchean : ウィキペディア英語版
Paleoarchean

The Paleoarchean (; also spelled Palaeoarchaean (Formerly known as early Archean)) is a geologic era within the Archaean. It spans the period of time —the period being defined chronometrically and not referenced to a specific level in a rock section on Earth. The name derives from Greek "Palaios" ''ancient''. The oldest ascertained life form (well-preserved bacteria older than found in Western Australia) is from this period. 3,480 Ma: Fossils of microbial mat found in 3.48 billion-year-old sandstone discovered in Western Australia. The first supercontinent Vaalbara formed during this period.
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Paleoarchean」の詳細全文を読む



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