A new dinosaur species named Pegomastax africanus, or “thick jaw from Africa,” is shown in this photograph of a model and a skull released to Reuters by University of Chicago paleontologist

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A new dinosaur species named Pegomastax africanus, or “thick jaw from Africa,” is shown in this photograph of a model and a skull released to Reuters by University of Chicago paleontologist on October 3, 2012. REUTERS/Tyler Keillor via Paul Sereno/University of Chicago/Handout