Get latest articles and stories on Science at LatestLY. An international team has discovered a new big, meat-eating dinosaur, dubbed Meraxes Gigas, that provides clues about the evolution and anatomy of predatory dinosaurs such as the Carcharodontosaurus and Tyrannosaurus rex. Meraxes measured around 36 feet from snout to tail tip and weighed approximately 9,000 pounds. Science News | Discovery Provides Insight into Evolution and Anatomy of Big, Carnivorous Dinosaurs.