04 Jul
2008
Species Have Come and Gone
View a video interview with researcher John Alroy of the National Center for Ecological Analysis and Synthesis. Diversity among the ancestors of such marine creatures as clams, sand dollars and lobsters showed only a modest rise beginning 144 million years ago with no clear trend afterwards, as per an international team of researchers. This contradicts prior work showing dramatic increases beginning 248 million years ago and may shed light on future diversity........
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Friday, July 4th, 2008 at 5:30 am under
