BUENOS AIRES — A team of paleontologists showed reporters skulls of a rat-like mammal that lived when dinosaurs still roamed the earth and was recently discovered in southern Argentina. The creature, one of the few mammals discovered in South America from the time of the dinosaurs, was between 10 and…
WASHINGTON — A small collection of amber-trapped feathers that may have belonged to dinosaurs or birds 80 million years ago have been found in a Canadian museum collection, said a study on Thursday. Ryan McKellar, a graduate student at Canada’s University of Alberta, pored over more than 4,000 specimens held…