How do you battle in Fossil Fighters?

The best way to beat Saurhead is by using vivosaurs that lower his team skills. So the best vivosaurs to use are 2 vivosaurs at least in rank 8 or 9 (I used Shanshan and Spinax) and a Compso which you can get in the cleaning room for 200 Donation Points. (DP) You should put your strongest vivosaur in the AZ zone and Compso and the other vivosaur in the support zones. Trust me, you'll beat Saurhead easily.

Ninjapower5s suggestion: If you have a rank 12 dinosaur use it! I used Spinax (Rank 12) Venator (Rank twelve) And Megalo ( rank 12) i recommend Megalo put it at the front then use null breath while your back two dinosaurs do the work