Controls on the evolution of Ediacaran metazoan ecosystems: A redox perspective.

Geobiology · 2017 · PMC5485040 · PMID 28387043

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an observed trendno p-value reported

An observed trend towards heavier δ 34 S py documented throughout the Sheepbed Formation has been interpreted to represent pore water sulphate limitation (Johnston et al., 2012 ).

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a possible trendno p-value reported

At least intermittent oxia is implied with a possible trend towards ferruginous anoxia up‐section.

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