First make a square of 4 doors.craft a large bear trape and place it in the square of the doors. Get a pteranodon,open one door,mount the pteranodon And then lead the carno to towards the door. Don't fly too fast. When he is close enought lead him right in front of the door and then agro it and stop on the bear trap. Look back if he is coming. If he is getting too close fly up. You will hear a voice which means the large bear trap has got it. Now dismount, don't panic.close then open door. now take the advantage of glitches. His head and tail can be seen outside. Shoot it's head with traq arrows.
Things u'll need - a pteranodon with some health over 1k. (Pteranodon saddle at level 38)
4 stone door frame and doors
Take 20 narcotics if you don't want to take any risk
1 large bear trap
And prime or raw meat.
To get prime meat kill diplo. They just push back no harm.use your pteranodon