Holes in Fossil Shells Show Effects of Competition and Evolution

Fossil records of the holes drilled in clam shells before and after a mass extinction two million years ago show patterns of predator-prey behavior indicating that although diversity recovered rapidly, the level of competition has not, according to an article in the journal Science.
The study emphasizes a new way of looking at the consequences of extinction and recovery, by closely observing how individual species interact with each other.

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All News summaries for January 04, 2005