Are you suggesting that this is the cause of the extinction event, rather than an extraterrestrial impact? Or something more like the impact may have caused a s

Are you suggesting that this is the cause of the extinction event, rather than an extraterrestrial impact? Or something more like the impact may have caused a significant change in atmospheric composition? This would not explain the myriad other, much smaller species that also perished, not to mention all of the marine animals.