The same reasoning applies with how dinosaurs are dated. Dinosaur experts say dinosaurs lived between 140 to 65 million years ago. Decide for yourself. Read Job chapters 40 and 41 and then decide. These untamable animals are described by God and can only be tamed by God.
Some people say the animals are fictional.
Beating up a fictional character is pointless. If I said I could beat up Mike Tyson you would be impressed. God would not use fiction to make this point. The largest dinosaurs did not have to be fully grown, they could have been younger. I may premise that I have nothing to do with the origin of the mental powers, any more than I have with life itself.