Size comparison between ARK Giganotosaurus (45 m) and Giganotosaurus in real life (12 m). While it may appear absolutely ridiculous, this diagram should be accurate with only a minimal margin of error. :
Giganotosaurus - ARK: Survival Evolved Wiki
ArtStation - Paleo ARK Legends: Evo Giganotosaurus
Eternal Alpha Giganotosaurus - ARK Official Community Wiki
How to tame Giganotosaurus on ARK: Lost Island in 2022