Dynamic and synchronous changes in metazoan body size during the Cambrian Explosion.

Sci Rep · 2020 · PMC7176670 · PMID 32321968

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an overall trendno p-value reported

Some models suggest an overall trend of oxygenation caused by rising atmospheric pO 2 of up to ~0.3 present atmospheric level (PAL) by the early Cambrian 29 .

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