If the Jurassic Park was to be filmed again, the story would not revolve around T-rex (Tyrannosaurus rex), but around Gigantosaurus mrolini. The latest addition to the dinosaur fossil&, G carolini is the largest carnivorous dinosaur to walk the earth. The remains were discovered by fossil hunter Ruben Carolini in the province of Neuquen, northern Patagonia, Argentina. The 8-tonne dinosaur measures more than 40 feet.