Triassic - Jurassic Extinction

Seeking a Pot of Geological Gold by Aaron L. Gronstal
Astrobiology, December 15, 2011
http://astrobio.net/index.php?option=com_expedition&task=detail&id=4400&type=story
http://www.spacedaily.com/reports/Seeking_a_Pot_of_Geological_Gold_999.html

PDF file at
http://astrobio.net//makepdf.php?id=4400&component=news

Yours,

Paul H.