The permian extinction 200 million years ago ice or fire?

https://www.sciencedaily.com/releases/2024/10/241028164257.htms
These researchers think that the cold periods after the massive volcanic eruptions cause the mass extinction 200 million years ago.  Massive amounts of carbon dioxide were expelled into the atmosphere, but they think that the huge amounts of sulfates caused rapid cooling more than once during these massive eruptions and that it was the cold that life on earth could not survive.
Maybe the dinos were warm blooded even then and took over after the mass extinction event.
Ron Okimoto