There is a secret level called Eggipus Rex hidden in level 11 (Dino Might!).
To use this cheat you will need the yelow gem, to get it you will need a certain amount of time relics, go to the centre of the main warp room.
Jump on the object there, you will be taken to a secret warp room, one of the levels will take you to the secret entrence for Hang em' High, complete it using the secret entrence and you will be awarded with the yellow gem.
First go on Dino Might and when you get to the yellow gem platform go on it, you will be taken to a special part of the level.
When you get to the first triceratops run, when you get to the second pterodactyl run into it. It will take you to Eggipus Rex.
Added by: Marcus , ID#971