What exactly is a dinosaur? Contrary to popular belief, dinosaurs are land-dwelling reptiles with one of two hip structures that place their legs directly underneath them.
This impressive member of the spinosaur kind stood around 15–16 feet tall. It reached lengths of 50 feet, and weight estimates place it at seven or more tons.
Standing at 35–40 feet tall, weighing up to 50 tons, and reaching lengths of 60–70 feet, Brachiosaurus was one of the largest land animals ever to exist.
Found throughout the western United States, this carnivorous theropod was anywhere from 17–25 feet long, weighed at least 1 ton, and stood at about 7–8 feet tall.