Last Updated:2025/12/07
Sentence

地質学でいう18億年前から8億年前の10億年間では、酸素濃度は低いままで進化の革新は停滞しているように見えました。

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During the Boring Billion, oxygen levels remained low and evolutionary innovation appeared to stagnate.

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During the Boring Billion, oxygen levels remained low and evolutionary innovation appeared to stagnate.

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Related words

Boring Billion

Proper noun
Japanese Meaning
(地質学)約18億年前から約8億年前にかけて、地球上で生じた出来事を指す用語で、プロテロゾィック時代中期に位置する期間を表します。
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地質学でいう18億年前から8億年前の10億年間では、酸素濃度は低いままで進化の革新は停滞しているように見えました。

English - English

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