Directed by
| Irvin S. Yeaworth Jr. | ||
Writing Credits (in alphabetical order)
| Jack H. Harris | ... | (original idea) |
| Dan E. Weisburd | ... | (screenplay) |
| Jean Yeaworth | ... | (screenplay) |
Cast (in credits order) verified as complete
| Ward Ramsey | ... | Bart Thompson | |
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Kristina Hanson | ... | Betty Piper |
| Paul Lukather | ... | Chuck | |
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Alan Roberts | ... | Julio |
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Fred Engelberg | ... | Mike Hacker |
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Wayne C. Treadway | ... | Dumpy (as Wayne Treadway) |
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Lucita Blain | ... | Chica (as Luci Blain) |
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Howard Dayton | ... | Mousey |
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Jack Younger | ... | Jasper |
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James Logan | ... | T.J. O'Leary |
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Wilhelm Samuel | ... | Townsman |
| Gregg Martell | ... | The Neanderthal | |
| Rest of cast listed alphabetically: | |||
| Jack H. Harris | ... | Tourist on Boat (uncredited) | |
Produced by
| Jack H. Harris | ... | producer |
| Irvin S. Yeaworth Jr. | ... | co-producer |
Music by
| Ronald Stein | ||
Cinematography by
| Stanley Cortez | ... | director of photography |
Editing by
| John A. Bushelman | ||
Art Direction by
| Jack Senter | ||
Set Decoration by
| Herman N. Schoenbrun | ... | (as Herman Schoenbrun) |
Makeup Department
| Don L. Cash | ... | makeup artist (as Don Cash) |
Second Unit Director or Assistant Director
| Herbert E. Mendelson | ... | assistant director (as Herbert Mendelson) |
| Bill Jersey | ... | making of director (uncredited) |
Sound Department
| Victor B. Appel | ... | sound (as Vic Appel) |
| Arthur Cornell | ... | sound editor (as Jack Cornall) |
| Jack Wheeler | ... | sound editor |
Visual Effects by
| Tim Baar | ... | special photographic effects |
| Wah Chang | ... | special photographic effects |
| Gene Warren | ... | special photographic effects |
| Marcel Delgado | ... | dinosaur model constructor (uncredited) |
| Tom Holland | ... | stop-motion animator (uncredited) |
| Phil Kellison | ... | stop-motion animator (uncredited) |
| David Pal | ... | stop-motion animator (uncredited) |
| Ralph Rodine | ... | assistant camera: stop-motion (uncredited) |
| Don Sahlin | ... | stop-motion animator (uncredited) |
Camera and Electrical Department
| Paul Stader | ... | underwater director of photography |
Animation Department
| Victor Delgado | ... | dinosaur model maker (uncredited) |
Costume and Wardrobe Department
| Bill Edwards | ... | wardrobe supervisor |
Script and Continuity Department
| Sam Freedle | ... | script supervisor |
Additional Crew
| Paul Stader | ... | underwater sequence director |
| S. Robert Zanger | ... | assistant to producer |
| Alfred Bester | ... | technical advisor (uncredited) |
| Algis Budrys | ... | technical advisor (uncredited) |
