If you have an argentavis, grab the procoptodon on the claw of the bird and let a friend fire him some tranq arrow / dart. If you don't have an argentavis or a quetzal, then, trap him with bolas and fire him. Bring some wood / stone fence foundation and some wall to build around him to be sure that he's not attacked by any wild creature and be sure to have a lot narco / rare mushrooms. When tamed, a procoptodon is fast and he's a great Dino to tame other since you can jump in his front pocket and fire weapons. Also great in scorched earth when you're trapped in a sandstorm.
I come on here for tips about taming and ko and all i see is complaining about changes made. Can i get some actual tips on catching this thing, tried bear traps but couldnt get it armed in time to catch one.