|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. If it is real, then it might be one of the largest Jurassic sauropods ever discovered.