I tried all dinos out, best dinos for taming a troodon are 2 wyverns lvl 75 or 2 spinos lvl 100 or 4 Rex lvl 100. Dodos are useless. Can post later a link with a list of all dinos and needed amount of them.
As much as i hate making a tip for this demon, put 3 dino gates down in a triangle and close them all. Put the troodon inside with a flyer or lead it in. Get a parge dinos about rex size. Maybe 2. Put it on neutral. Tranq it. Once tranqed use a tanky dino such as a carbonemys and stand near the rex. Release the troodon and let it attack your turtle while the rex slowly dies. If possible place 2 rexs asleep together to kill both at the same time.