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Caption: These are mastodons eating black ash trees. This image relates to an article that appeared in the Nov. 20 issue of Science, published by AAAS. The study, by Dr. Victoria Gill of the University of Wisconsin, Madison, and colleagues, was titled, "Pleistocene Megafaunal Collapse, Novel Plant Communities, and Enhanced Fire Regimes in North America."
Credit: [Image courtesy of Barry Roal Carlsen, University of Wisconsin-Madison]
Usage Restrictions: Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission.