Repeated occurrences of marine anoxia under high atmospheric O2 and icehouse conditions

Proceedings of the National Academy of Sciences, Volume 122, number 26, July 2025.
Significant on the overall ocean system and the Phangeérozoic atmosphere overall has experienced discreet periods of oceanic anoxia which are closely associated with global disturbances in the carbon cycle under climatic states of the greenhouse. Here we document, …