Permian-Triassic Extinction: IMPACT!

[Gautam Majumdar <gautam@majumdar.demon.co.uk>]

Ray Stanford <dinotracker@earthlink.net> wrote
> Have a look at what NASA is saying about the Permian-Triassic extinction:
>
> http://science.nasa.gov/headlines/y2002/28jan_extinction.htm?list159275
NASA is a bit late on this one. The original article was published a 
little while ago. See :

Becker L, Poreda R J, Hunt A G, Bunch T E, Rampino M, Impact Event at 
the Permian-Triassic Boundary: Evidence from Extraterrestrial Noble 
Gases in Fullerenes. Science 2001; 291: 1530-33

And a review in the same issue :

Kerr R A, Whiff of Gas Points to Impact Mass Extinction, Science 2001; 
291: 1469-70

Gautam Majumdar                 gautam@majumdar.demon.co.uk