This illustration shows two Cretaceous Period predatory dinosaurs named Gualicho shinyae hunting smaller bipedal herbivorous dinosaurs in northern Patagonia 90 million years ago. Scientists on July 13, 2016 described fossils of Gualicho unearthed in Argentina, showing that the two-legged carnivore had arms only about the length of a human child’s even though its body was up to about 26 feet (8 meters) long.(Photo/Agencies)
