Robot Monster

Robot Monster aka Monster from Mars is a 1953 American independent blackandwhite 3D science fiction film, produced and directed by Phil Tucker, written by Wyott Ordung, and starring George Nader, Claudia Barrett, and George Barrows. The production company was Three Dimension Pictures, Inc. The film was distributed by Astor Pictures.

RoMans mission is waylaid, though, when he develops an illogical attraction to Alice Claudia Barrett, the scientists eldest daughter. He refuses to eliminate her, forcing the alien leader, The Great Guidance, to teleport to Earth after first killing the disobedient RoMan. The Great Guidance then attempts to finish the genocide by releasing prehistoric dinosaurs and a massive earthquake on the remaining survivors.But Johnny is alive, having just awoken from a concussioninduced fever dream. Up to now, all that has happened has just been his nightmare. His parents, who had been looking for him, rejoice and take him home. ........

Source: Wikipedia