The 1950’s was a great time for Sci-Fi movies featuring lost worlds (e.g., The Land Unknown, 1957), resurrected dinosaurs (e.g., The Beast from 20,000 Fathoms, 1953), and scientists reverting to cavemen (e.g., Monster on The Campus, 1958).
In fact the Rhedosaurus from ’20,000 Fathoms’ turns up on page 6 and the helicopter from The Land Unknown brings in the troops on page 7 of this long forgotten tale.