I would just keep it. You never know if they'll make it possible to use it for something in the future. Dinos don't take up inventory and warehouse space like they used to so I never had a reason to destroy one.
Lol argatar i think you just came from the game Pirate Galaxy cuz you can sell ships there. Well if you really have brought the wrong dino than you'll have to deal with it. This game doesn't give chances to recover much.