Mating injuries may lead scientists to identify dinosaurs’ sex

By Ashley Strickland, CNN (CNN) — Paleontologists have long wrestled with how to differentiate between male and female dinosaurs based on their fossils. But new research may bring scientists closer to identifying the sex of one group of dinosaur. Hadrosaurs, also known as duck-billed dinosaurs, were common during the Late Cretaceous Period (100.5 to 66