To read later. This has long been thought to have been the cause of the mass extinction that killed the dinosaurs and it would be good to get more confirmation. Next up, did global warming cause or contribute to the Permian extinction. If it did, it would pose a counter to the AGW nonsense currently being pushed because there were catastrophic volcanic basalt flows and coal field burning in the geologic record that put to shame our puny efforts at increased CO2 plus, the CO2 was scrubbed out of the atmosphere once the lava floods that covered much of Siberia and the coal fires petered out.
There are also a couple of other mass extinctions it would be good to understand because the “science” of the left is pushing the idea that we are causing another, even worse extinction. Knowledge vs rhetoric is a good thing.
The Permian-Triassic extinction was also caused by impact, but the candidate crater hasn’t been identified.