How to pronounce “devonian” in English

So we have another gigantic volcanic event.And then we have another one for the late Devonian.So here's the twist.

There's no land, basically, in the northern hemisphere, and Africa's over the South Pole.The things we frack in the Midwest are all from the Devonian mass extinctions, interesting.

There's no land, basically, in the northern hemisphere, and Africa's over the South Pole.But there's also a big volcano in the Devonian.

There's no land, basically, in the northern hemisphere, and Africa's over the South Pole.And you see a massive ice age at the end of the Devonian.

The end Ordovician is kind of weird, so I'll forget about that.And as I said, there's other weird stuff going on in the Devonian.Trees are starting to take over the planet, which might be really bad.

extinction, shock quartz, anything that would indicate there was a big impact at any of these other mass extinctions.They did not find it for the end Triassic, or the end Permian, or the late Devonian, or the end Ordovician.So scientists thought they had this mechanism that could account for mass extinctions, that the story of mass extinctions is a story of asteroid impacts.