Villain(s)  Aliens, flying reptile

Actor(s):  Mamie Van Doren, Mary Marr, Paige Lee, Irene Orton

Brief Description  Voyage to the Planet of Prehistoric Women (1968) is a low-budget, American science-fiction film directed by a young, uncredited Peter Bogdanovich (under the pseudonym "Derek Thomas") and produced by B-movie icon Roger Corman. The movie is famous for being a "Frankenstein" production. Corman bought the rights to the 1962 Soviet sci-fi film Planeta Bur (Planet of Storms) and had Bogdanovich splice its high-quality special effects together with newly shot, low-budget footage of Hollywood blonde bombshell Mamie Van Doren.

Plot:
Set in the then-distant future of 1998, the film tracks an Earth expedition exploring Venus. Earth sends a spacecraft to Venus. Upon landing, contact is lost with the two astronauts on board. They emerge onto a volatile, prehistoric Venusian landscape alongside their large co-pilot robot. A second spaceship carrying three more astronauts is dispatched to find them. While navigating Venus in a hover-car, this rescue team encounters an underwater city and is attacked by a giant pterodactyl-like flying reptile, which they shoot down and kill. Unbeknownst to the astronauts, this flying beast is "Tera," a god worshipped by a native tribe of telepathic, blonde Venusian mermaid-women led by Moana (Mamie Van Doren).

Mourning their dead god, the Venusian women use their collective telepathic powers to command the elements. They conjure massive rainstorms and volcanic eruptions to destroy the human "sacrilegious invaders". The astronauts fight off the volcanic lava and safely blast off from Venus to return to Earth. However, their robot is left behind, severely damaged by the volcanic fire. In the final twist, the Venusian women find the smoking, metal machine, reject their old flesh-and-blood religion, and begin worshipping the robot as their new technological deity. The movie It uses the exact same Russian special effects footage previously recycled in another Corman production, Voyage to the Prehistoric Planet (1965).