A dinosaur creche has been found entombed in the volcanic debris that engulfed it on a hillside 123 million years ago. Six young Psittacosaurus, all less than three years old, died side by side. It is the earliest known dinosaur nursery... Paul Barrett, of the Natural History Museum in London, one of the researchers, said that the fossilised juveniles appeared to have formed a creche but it was impossible to be sure if they were part of a larger herd or if they grouped together for protection. "This is the first time we've found a group of these dinosaurs together....