"Instead, these findings support theories suggesting the end-Permian was triggered by ocean changes long in the making, "the climax of a prolonged environmental crisis," Clapham said.
The whole Permian period, stretching from about 300 million to 250 million years ago, saw gradual warming. This would have slowed down circulation in the ocean, eventually leading to very low levels of oxygen in the water. Massive volcanism near the end of the Permian might have wreaked even further havoc on the environment."
Alas, I did. But at least I captured it in the post and you pointed it out!
Redemption!
:-)
it must be Bush’s fault!
“The whole Permian period, stretching from about 300 million to 250 million years ago, saw gradual warming. This would have slowed down circulation in the ocean, eventually leading to very low levels of oxygen in the water. Massive volcanism near the end of the Permian might have wreaked even further havoc on the environment.”
“I swear I didn’t leave my SUV idling, officer! Honest, I didn’t!”