For the purposes of overcoming DR, Aerodactyl's natural weapons are treated as stone. Breath Weapon (Su): 60-foot cone, once every 1d4+1 rounds, damage 10d8 fire, Reflex DC 25 half. The save DC is Constitution-based. On a failed save, creatures are also on fire; until extinguished, they take 2d6 fire damage each round and are panicked.