Photo: Largest "Terror Bird" Fossil Found in Argentina

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An artist's rendering of a new species of phorusrhacid, or terror bird, shows the massive creature's sharp, curving beak. The fossil skull of the new specimen—seen in the bottom photo alongside a modern California condor skull—is 2.3 feet (almost a meter) long and represents the largest bird skull ever found.

Skulls photograph by S. Bertelli, illustration by S. Abramowicz

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