Well what I found to be the best way is to find the lvl you are looking for pick it up with a pteranodon or An argy and fly it back to your base and drop it in a small box then just tranquilize it and then just through the eggs on its invintory and let it tame.
It's an easy tame have at least 100 of any other eggs dodo eggs most likely or 1 giga egg etc but the egg effect stacks up to 3 times so tame up a bunch of them also if you move different Dino's away from each within a certain radius they will poop more eggs to ðŸ‘ðŸ»
Find an oviraptor that is level 5 or lower. Pick it up with a ptera, place it in a taming pen, and KO. Just use bronto eggs, they're the easiest to get. You can find plenty on the South Haven, but beware angry parents.