All you need to tame a 150 early is a bola, 2 clubs, materials to repair the clubs, some wooden fence foundations and some thatch doorframes

You need to bola the parasaur and quickly surround it with the fence foundations and doorframes on them. You have plenty of time to do that, I've done it many times

Once trapped start whacking it with the clubs until it's knocked out but be careful not to hit it when it's unconscious to not ruin the taming effectiveness