- Released in June 1957
- Running time: 75 minutes
- Production Co.: Clover Productions
- Distribution Co.: Columbia Pictures
- Directed by Fred F. Sears
- Written by Samuel Newman and Paul Gangelin
- Starring: Jeff Morrow, Mara Corday, Morris Ankrum
- Global panic ensues when it is revealed that a mysterious UFO is actually a giant bird that flies at supersonic speed and has no regard for life or architecture.
- Winged Monster from 17,000,000 B.C.! Big as a Battleship! Flies 4 Times the Speed of Sound! Atomic Weapons Can't Hurt It!
- Air Missile Strikes! Big as a Battleship! Flies 3000 M.P.H.! 700 ft. wingspan! Rockets Into Stratosphere! Attacks cities...coast-to-coast!
- Flying beast out of prehistoric skies!