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Caption: These are crocodile bite marks left on undigested bones. In this image, a deep groove with a V-shaped cross section is visible. This image relates to an article that appeared in the April 6, 2012, issue of Science, published by AAAS. The Perspective, by Jackson Njau at Indiana University in Bloomington, Ind., was titled, "Reading Pliocene Bones."
Credit: Image courtesy of J.K. Njau
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