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A telltale jaw fragment unearthed from a 75-million-year-old rock formation in Big Bend, Texas, has led to the identification of a new dinosaur species, Leptorhynchos gaddisi.
The species is a feathered dinosaur about the size of a turkey with a bird-like, toothless beak, part of a group called Caenagnathids. Nicholas Longrich, the Yale University paleontologist who helped make the identification, said that the differences that set apart this species — named Leptorhynchos for its little jaw — were subtle.
The new species had a narrow jaw and a rounded chin, and was reported in the Bulletin of the Peabody Museum of Natural History.