The UK version of the film runs 100 minutes and features nine minutes of footage that was cut from the U.S. version of it, which runs 91 minutes. This includes a scene where Nupondi (
Martine Beswick) performs a provocative dance; a scene where Tumak (
John Richardson) tastes from the container of paint in the Shell Tribe's cave; an extended violent scene of a fight among the ape-men while Tumak and Loana (
Raquel Welch) hide from them, and extended scenes that show Tumak, after he leaves the Rock Tribe, wandering through a valley and coming across the skeleton of a giant lizard. The widescreen LaserDisc release of the film is the UK version (which gives Richardson top billing), while the VHS release of it is the U.S. version (which gives Welch top billing).