Voyage to the Planet of Prehistoric Women

"Voyage to the Planet of Prehistoric Women" concerns a party of cosmonauts attempting to rescue another group on Venus. Along the way they encounter prehistoric monsters and other perils, and there is an intelligent robot. This part of the film is really an excellently made Russian sci-fi film called "Storm Planet", while the other part concerns a band of telepathic Venusian cave girls led by Mamie Van Doren, who worship a pterosaur named Tera and watch the struggles of the cosmonauts from afar; this other part was spliced in by P. Bogdonovitch (at R. Corman's behest? I'm not sure), and is ridiculous camp. I've seen two versions of this film (not including the Russian original), one without the Van Doren sequences. Although it is regarded as a psychotronic/cult/camp type of film, the classiness of the original manages to come through most of it, and the pacing benefits from the exclusion of a stereotypically sexist subplot involving a female crewmember's misplaced patriotic zeal.