Washington, UNITED STATES
A pedestrian pauses to look at a life-size model of the Spinosaurus aegyptiacus dinosaur outside the...
A pedestrian pauses to look at a life-size model of the Spinosaurus aegyptiacus dinosaur outside the National Geographic Society building in Washington, September 11, 2014. Scientists announced during a news conference on Thursday the discovery of fossils in Morrocan desert cliffs from the 50-foot (15-meter) long, seven-ton African dinosaur predator that is the biggest dinosaur predator to ever walk the Earth. REUTERS/Jim Bourg (UNITED STATES - Tags: ENVIRONMENT EDUCATION SCIENCE TECHNOLOGY ANIMALS)