1965's "Women of the Prehistoric Planet" formed a double bill with "The Navy vs. the Night Monsters," a last gasp theatrical revival for Jack Broder's Realart Pictures, sitting on the shelf for over a year prior to release, then quickly sold to television after a lukewarm box office response. Producer George Edwards was involved in both, coming off double duty for director Curtis Harrington on "Queen of Blood" and "Voyage to the Prehistoric Planet," hardly venturing far with this similarly titled item announced as "Prehistoric Planet Women," screenwriter Arthur C. Pierce at the helm to direct his own script for the only time in his sci fi career. The 11 day shooting schedule finished in June 1965, its threadbare sets and pitiful effects allowing very little in the way of acting from a cast comprised of veterans like John Agar, Wendell Corey, Keith Larsen, and Glenn Langan, with up and comers like Robert Ito (KUNG FU, QUINCY), Stuart Margolin (THE ROCKFORD FILES), Adam Roarke (Ray Milland's "Frogs"), and Paul Hampton (David Cronenberg's "Shivers"). Worst of all is the misleading title and ad campaign, promising girl fights and giant creatures, offering one rather civilized cave man briefly battling a few savage primitives, a giant lizard that gets roasted in five seconds, and a ludicrous puppet tarantula that lunches on Stuart Margolin's back. The opening credits unspool to the theme from "Creature from the Black Lagoon," Wendell Corey top billed as Admiral King, returning to Earth with two fellow ships trailing behind, forced to locate the one that has crashlanded on the aforementioned planet called Solarius, where the last survivor is a female Centaurian (most of whom are played by Asians) who gives birth to Robert Ito's Tang, the titular prehistoric caveman grown to full adulthood by the time King's Cosmos arrives at the speed of light (space time continuum is something that STAR TREK would pick up on). Various crew members go out for one reason or another, beautiful Irene Tsu as Centaurian Linda naturally enjoying a nude swim before being menaced by an ordinary boa constrictor, rescued from near drowning by the alert Tang. Love at first sight is sadly unavoidable in a 90 minute feature, lesser characters biting the dust yet comic relief Paul Gilbert criminally surviving to improvise much of his unfunny schtick. Director Arthur C. Pierce isn't able to overcome the crippling budget with any visual interest but his script does deliver a few ideas that most cheap sci fi items don't bother to examine, just try to forget that twist during the last 20 seconds, perhaps the funniest gag of all.