I created a 4x10 stone pin, 4 high, 1 solid (wall), 3 doorway (wall, no door), 1 solid, stone doorway, repeat. Seal that roof! You should have 3 stone dino gate doorways total. Open all doors. Use a ptero with decent stamina, argo Griffin and allign yourself through the gate and lead it in (I used rare flowers to keep it interested). Have a friend close the front gate while you sacrifice your ptero to close the last (leave middle open). Trapped and occupied Griffin!
It was lvl 74 and took 70-80 tranq DARTS. Took about 40-50 pieces of regular raw meat. Needed about 300-350 narcotic jars. Took about 90 minutes (tame x5).
I grabbed the pin idea from a youtuber but mine’s smaller and does not use electric doors. Keep a small distance away from opening while shooting at it.
Just build a 2x4 or 2x6 pen with a dino gate on one side, placing stone pillars on the outer edges all along it. Make it near the green obelisk! Then fly the griffin into it thru the door with a pteranodon, fly out thru other end thru the pillars, land your mount, run to the other side, close the door, boom. Trapped griffin. Then tame with roughly 150 tranq arrows. Use mutton or prime meat as they are easiest to come by.