Where do you get the iguanadon fossil in fossil fighters

You can get the Iguanodon fossil in the pay to dig site in the tunnels of Rivet Ravine. (You can also get the Ouranosaurus fossil)






beat the game, then beat saurhead in the fossil staduim in one f the rooms after you beat him it will appear in your fossils <-----(prevues answer that's how to get ignosaur not iguanadon, post the real thing on top of this if anyone knows)