As the issue now includes a deepening of recent radical shift potential in equator-to-pole gradient, the chances for this are now measurably distinct.

The question is left open, particularly in the recent data on gulfstream collapse, which may be imminent.

I'm not sure anyone is qualified to claim 100% anoxic events and hydrogen sulfide out gas are limited to the Permian condition.

https://www.nature.com/articles/s43247-025-02793-1

and

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/200...

are in conflict.