An American cowboy living in Mexico discovers his cattle is being eaten by a giant prehistoric dinosaur.
| Directing | Edward Nassour | Director |
| Directing | Ismael Rodríguez | Director |
| Writing | Robert Hill | Screenplay |
| Production | Edward Nassour | Producer |
| Production | William Nassour | Producer |
| Sound | Raúl Lavista | Original Music Composer |
| Camera | Jorge Stahl Jr. | Director of Photography |
| Crew | Jack DeWitt | Additional Dialogue |
| Writing | Willis H. O'Brien | Idea |
| Art | Jack DeWitt | Art Direction |
| Visual Effects | Louis DeWitt | Visual Effects |
| Visual Effects | Jack Rabin | Visual Effects |
| Visual Effects | Edward Nassour | Visual Effects |
| Visual Effects | Jay Baylor | Visual Effects |
| Writing | Willis H. O'Brien | Original Story |
