Meet what could be the new granddaddy of horned dinosaurs—Titanoceratops. At 15,000-pound (6,800-kilogram) the prehistoric titan would have rivaled the African elephant-size Triceratops, which weighed more than 11,000 pounds (5,000 kilograms), according to a new analysis of a partial skeleton. The beast—which had an 8-foot-long (2.4-meter-long) skull—is the biggest dinosaur found so far in North A