Raquel Welch in a strategically upholstered bikini gets to fight the dinosaurs and other anachronistic beasties in this anthropologically dubious reworking of the 1940 Hal Roach/D.W. Griffith prehistoric potboiler (alas, no Victor Mature in this one). Nobody knows how to speak, but they sure know how to apply makeup. With John Richardson, Martine Beswick, and clay animation by Ray Harryhausen; the director is Don Chaffey (Jason and the Argonauts, Creatures the World Forgot), who’s obviously in his element here.