By Gretchen VogelOct. 8, 2019 , 10:15 PM In the bowels of Yale University’s Peabody Museum of Natural History, Jasmina Wiemann yanks open a drawer in a floor-to-ceiling specimen cabinet. She lifts out a wickedly sharp, sickle-shaped dinosaur claw, black as coal. “This is the type specimen of Deinonychus—the basis […]