Latest USC Dornsife News in the Topic Extinction http://dornsife.usc.edu/news/topics/482/extinction/ Faculty and graduate students from the USC College Department of Earth Sciences explore the cliffs of England to search for evidence of an ancient ocean crisis.]]> Wed, 19 Jan 2011 09:57:00 -0500 The tortoise, long revered for its pace, good looks and mobile home, may be a victim of its own success as this living fossil is in danger of disappearing. "We are at great risk of losing them all, not within our ...]]> Wed, 16 Jun 2010 09:06:00 -0500 USC College’s David Bottjer and his graduate crew dig up new clues about ancient mass extinctions.]]> Thu, 1 Nov 2007 01:50:00 -0500 Mass extinction 250 million years ago happened slowly, say USC College geologists.]]> Mon, 1 Oct 2007 01:29:00 -0500 Wed, 1 Aug 2007 00:21:00 -0500