I would recommend for taming it to build a 3 stone dino gates and 2 stone dino doors. The space the 3 gates so that your pteranodon can just fly out but not more than that. Put the doors on each end and close on door. Bait the argy inside by going inside with the pteranodon yourself the escape through one of the gate gaps. If u built the trap right he won’t be able to follow. Then hop of the pteranodon and run to the side with the open door and close it. And there we go now u can knock it in peace and the beat part the trap is reusable. Make sure to use tranq darts or better to minimise the chances to kill it.