Ez way to tame a bronto get 6 normal Dino gateways then shoot it with a crossbow behind the trap once it is in seal it in and the tranq it even a crossbow works then once it is knocked out feed it crops then craft a uplink and deticated storage set them as berrys get the platform saddle put the uplink on the platform and then watch as all the berrys get toes home as you grind with him