A professional paleontologist studying fossils in a collection at Harvard University has identified a new species of dinosaur. The newly discovered species, named Pegomastax africanus, or ‘thick jaw from Africa,’ has a short parrot-shaped beak up front, a pair of stabbing canines, and tall teeth tucked behind for slicing plants. The tall teeth in upper and lower jaws operated like self-sharpening scissors, with shearing wear facets that slid...
