Physorg: Ancient fossil leaves tell a story of sudden loss of biodiversity that may have future parallels. Scientists have unearthed striking evidence for a sudden ancient collapse in plant biodiversity. A trove of 200 million-year-old fossil leaves collected in East Greenland tells the story, carrying its message across time to us today. Results of the research appear in this week’s issue of the journal Science. The researchers were surprised to find that a likely candidate …