Not that Marx/Posts/Penn Researcher Helps Discover and Characterize a 300-Million-Year Old Forest, Preserved Like Pompeii/Penn Researcher Helps Discover and Characterize a 300-Million-Year Old Forest, Preserved Like Pompeii27 February 2012·13 words· links sharesPenn Researcher Helps Discover and Characterize a 300-Million-Year Old Forest, Preserved Like Pompeii