[WoofDog123]

obviously when working with the fossil record in the p-t extinction area I assume there is so little to work with, and dating issues involved, that without a crater anything was speculation but I was always surprised at the number of scientists pretty much dismissing the impact theory for the P-T extinction, of all the extinctions to be doubtful of. 95% is a LOT.

Now that there may be a crater confirmed, how is anyone going to argue that such an impact wouldn't have exactly the P-T mass-extinction-type effect, given what the more accepted chicxulub impact did 65m years ago.

[Robert A Cook PE]

Wonder what 250 million years of 5 mile deep ice moving around on top of the original sediments and gravel does to fossils in those rocks...

But actually, it'd probably be irrelevant: Inside the original crater, and around it, there are no fossils. Nothing but melted rock and shatter cones.

[qam1]

given what the more accepted chicxulub impact did 65m years ago.

The Chicxulub impact killed the Dinosaurs hypothesis is not more accepted, in fact the opposite as it is easily debunked (Honeybees & Alligators anyone).

It's pretty popular in the media because of it's Hollywood type ending and with some Astronomers & Geologist looking for a trip to Cancun, but you will find very few paleontologist who agree with that silly hypothesis.