Gigantism and acromegaly are two disorders with the same disease mechanism and somewhat similar presentations. Even though they have the same disease mechanism, the two have entirely different outcome simply due to the age of onset. Gigantism is the result if the disease mechanism starts in childhood.
Adult Velociraptors grew up to 6.8 feet (2 meters) long, 1.6 feet (0.5 meter) tall at the hip and weighed up to 33 pounds (15 kilograms).
The Argentinosaurus is arguably the largest dinosaur that ever lived. It measured 120 feet long and 70 feet tall. It weighed about 100 tons. Only incomplete fossils were found which include vertebrae, sacrum, tibia, and broken ribs.