How do you beat the police chief in fossil fighters

This can be a hard battle, but there's a
way around that. Dig Nynchu and S-Raptor fossils
at Knotwood Forest and stick the S-Raptor to the
AZ, Nynchus to the SZ1 and a good supporter (Goyle
recomended) in the SZ2. The Earth Vivos will
crumble to your S-Raptor, and, if he dies Nynchus
will replace him. After just finish off the last
Vivosaur.