Contact: Greg Borzo
University of Chicago Medical Center
Caption: The fossil fish on the left is not related to the modern swordfish on the right, which is for sale at a fish market. Nevertheless, the swordfish developed a size and shape similar to the fossil fish and appears to be vulnerable to extinction for some of the same reasons that the fossil form was vulnerable: it is a large predator.
Credit: Photo by Matt Friedman
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Related news release: Study unravels why certain fishes went extinct 65 million years ago