Gather tar and deino bone shards from the tar pits.
Gather the tasty russet palm leaf from a flower located in the hills( -842, 232, -273 ) /waypoint -842, 232, -273.
Create the barriers by using the table in the Bonecrafter's hut.
Leash any deino that has "earthshaker" in its name ( -1211, 31, -99 ) /waypoint -1211, 31, -99 with the item in your bags or from the Quest Helper. This makes it non aggressive, and you can do this while it is attacking to stop the fight.
Go to the Pygmy Bridge ( -1213, 96, -198 ) /waypoint -1213, 96, -198 and simply stand there while the deino catches up to you, and then attacks the Allu'thoa
Click the four sparkly areas near the bridge to place the barriers