If someone asked you what the largest carnivorous dinosaur in the world was, you might answer without hesitation: "Tyrannosaurus Rex!"
To be honest, it would be unfair to say that your answer is wrong, because Tyrannosaurus Rex is indeed described as the largest carnivorous dinosaur in many books about dinosaurs.
But now we're here to tell you that Tyrannosaurus Rex did indeed play the role of the largest carnivorous dinosaur in the past, but now, its "champion" status has been relinquished.
In August 1993, Argentine paleontologists discovered a carnivorous dinosaur in Neuquén province. Its fossil remains included a femur, hip bones, tailbone, and a mandible with teeth. Because its femur alone was 1.4 meters long and its teeth were as long as an adult's forearm, scientists estimated that this dinosaur, which lived 110 million years ago, was 12.5 meters long and weighed an estimated 8 tons—10 centimeters longer than the Tyrannosaurus Rex "Su." Scientists speculate that this dinosaur supported its body with its powerful hind legs and walked on two legs, with short forearms used only for grasping food. Its enormous teeth could easily tear apart any prey.
How large of a prey would such a carnivorous dinosaur have to devour to satisfy its appetite? Coincidentally, in the same region, paleontologists also discovered a gigantic herbivorous dinosaur. This herbivorous dinosaur was over 30 meters long and estimated to weigh nearly 100 tons. It is highly likely that this gigantic herbivorous dinosaur was the primary prey of that gigantic carnivorous dinosaur.
