Demolition Man but about a caveman. A dinosaur gets unfrozen and modern day people can't deal with it so they unfreeze a caveman. Hes the only one who can kill it

Writer / Illustrator living in PDX.
Demolition Man but about a caveman. A dinosaur gets unfrozen and modern day people can't deal with it so they unfreeze a caveman. Hes the only one who can kill it