Dig this: A parrot-size dinosaur has been discovered with just one enlarged "digging" finger on each hand, scientists announced today. Unearthed in northeastern China, Linhenykus monodactylus is a member of the theropod dinosaurs, the group of two-legged carnivores that includes Tyrannosaurus rex and Velociraptor. Most theropods had three fingers on each hand. But Linhenykus belongs to a family kn