Ruling our planet as the dominant terrestrial vertebrates for 135 million years, dinosaurs were the largest creatures that ever inhabited Earth. The biggest sauropod dinosaurs may have achieved lengths of 190 feet and heights of over 30 feet, which is, in modern terms, an incredible size. Not all dinosaurs were that large; there were creatures just about 20 inches long but even these little beasts usually looked scary. From the little known Mapusarous to the legendary Tyrannosaurus Rex, check out these 25 terrifying dinosaurs.
Gorgosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous period. It was a bipedal predator weighing more than two tons as an adult. Living in a lush floodplain environment, it was an apex predator preying upon abundant ceratopsids and hadrosaurs.
Living in the Late Cretaceous period, Dracorex was a herbivorous dinosaur characterized with spiky horns, bumps, and a long muzzle. The best preserved fossil specimen was discovered in South Dakota by three amateur paleontologists in 2004. The specimen was most likely a young adult, approximately 10 feet long.
Triceratops is a genus of herbivorous dinosaur that first appeared during late Cretaceous period, about 68 million years ago in what is now North America. Bearing a large bony frill, three horns, and conjuring similarities with the modern rhinoceros, Triceratops is one of the most recognizable of all dinosaurs. They are estimated to have reached up to 30 feet in length, 10 feet in height, and up to 12 tons in weight.
Named after the leader of the Greek Titans, Cronus, Kronosaurus was among the largest marine reptiles that ever lived on Earth. Measuring about 30–33 feet in length, it had an elongated head, a short neck, a stiff body propelled by four flippers, and a relatively short tail. Kronosaurus was carnivorous with many long, sharp, conical teeth.
Dating back to the very end of the Cretaceous Period, Ankylosaurus was a large dinosaur occurring in today´s North America. The creature was notable for its heavily armored body and massive bony tail club. It’s estimated to have reached 30 feet in length and weighed up to 6 tons.