My first tame was an argy on mobile and easy difficulty. But pteras are awesome, they're super fast and can outrun even alpha rexes. As first flyer in hard o extremely hard difficulty they are super easy to tame, just need to Bola and use one or two tranq arrows with an ascendant bow which is easily obtainable through gifts and supply drops.

YOU NEED NARCOTICS OR BERRIES to keep them asleep. They are weak and can't carry much weight, but they're super fast and high levels are easy to tame and have very good stamina. best dinos to travel long distances at higher levels