Click here to order your Isle server with Citadel today!
Unfortunately, this is not possible within the vanilla game and is not recommended as all the dinosaurs are there to co-exist with each other. Future updates to the anti-cheat may also break such mods. Should you really want to have this set-up, you would need to use mods to achieve this.
Did the above information not work for you? Please click here to contact our support via a ticket.