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P/T crater found?
"NASA Announces Site of 'Great Dying' Meteor Crater
Researchers funded by NASA and the National Science Foundation have located
the site of an impact crater. The crater is believed to be associated with
the largest extinction event in Earth's history about 250 million years ago. "
Concerns the Bedout structure offshore in the Canning Basin, NW Australia.
Gravity measurements seem to indicate that the size of the structure is
comparable to Chicxulub and cores contain what certainly seems to be impact
melt/breccias at 3,000 m depth.
Unfortunately nothing on how the crater was dated, at least not in the
material NASA has put online.