|A historical restoration of Gigantosaurus megalonyx|
| Gigantosaurus megalonyx|
- Not to be confused with Giganotosaurus.
Gigantosaurus was a genus of very poorly known sauropod dinosaur from England. The more popular Giganotosaurus's name is often misspelled as this dinosaur's name (Difference: Giganotosaurus.The "O" is often cancelled.) It is a nomen dubium and lived during the Jurassic Period. It's unknown if it's a real dinosaur or not, or just a hoax, because it's discovery is announced by some teenagers and it never got any media exposure or announcement of discovery by any scientists. If it is real, then it might be one of the largest Jurassic sauropods ever discovered. With it's leg material remains the teenagers told the size to be of 30 m and it was the member of group diplodocoidea.