Bones contained entirely within the skin of some of the largest dinosaurs on Earth might have stored vital minerals to help the massive creatures survive and bear their young in tough times, according to new research by a team including a University of Guelph scientist. Guelph biomedical scientist Matthew Vickaryous co-authored a paper published today in Nature Communications about two sauropod dinosaurs -- an adult and a juvenile -- from Madagascar. The study suggests that these long-necked plant-eaters used hollow "skin bones" called osteoderms to store minerals needed to maintain their huge skeletons and to lay large egg clutches. Sediments...