The Land That Time Forgot

In the South Pacific is a mountainous island called Caspak. Winged humanoid creatures, dinosaurs, ferocious beasts of prey, Neanderthals, "wild ape-men," and monstrous reptiles terrorize each other, and the mixed crew of WW 1 adventurers who fight across the island and dine on Plesiosaurus steaks in the company of a jungle princess.