You need to get away from there so the lag stops then you need one baby Dino that you havent claimed and use admincheat destroytribedino (it may be slightly different should be easy to google). This will kill all the unclaimed dinos you've got on the map if you can't get away from the lag another admin will work. As far as I know it doesn't have to be the same Dino just any unclaimed baby
cheat destroytribeiddinos 2000000000 will do the trick as well. That's the ID for unclaimed dinos. You can trust me because reasons.