Get back on the dinosaur mount to travel to the next named, Beastmaster Kau'mua.
Clear all nearby monsters, even those that are non-aggro, to prevent them from adding during the fight with the Beastmaster.
Ceracupis' run speed is much slower than that of the Beastmaster. Use this to your advantage.
From time to time, Ceracupis will drop a small red target ring on your location. Shortly after the target ring is dropped, he will charge that target ring, resulting in a lot of damage and a big knock-back. Get away from the circle to avoid the effects, but note that the effects extend beyond the target circle and diminishes with distance.