Golden Arrow #3 (1945)

Golden Arrow successfully delivers a railroad shipment through treacherous terrain, earning congratulations from railroad officials. While traveling in a border town, he discovers a living diplodocus—a prehistoric creature thought extinct for fifty million years—which unscrupulous men plan to sell for profit. Golden Arrow must rescue the animal and stop the criminals from exploiting it, using his wits and skills to outmaneuver the villains who attempt to stampede cattle and cause a deadly accident to capture the valuable creature.