The tallest dinosaur in the world was probably Sauroposeidon proteles, a massive plant-eating creature that lived during the Early Cretaceous period. This dinosaur was first discovered in Oklahoma, United States in 1994. It is thought to have been around 30 metres (98 feet) tall, making it one of the tallest animals to ever walk the Earth.
Sauroposeidon was a member of a group of dinosaurs known as sauropods, which were characterized by their long necks and tails, and large size. Other well-known sauropods include Apatosaurus and Brachiosaurus. Sauroposeidon is thought to have weighed around 70 tonnes (154,000 pounds), making it one of the heaviest animals that has ever lived.
While its exact height is still debated by scientists, there is no doubt that Sauroposeidon was an extremely large animal. Its size would have made it difficult for predators to take down, and its long neck would have allowed it to reach leaves high up in trees â€“ something that would have come in handy during times when food was scarce on the ground.