Marx 6 inch Cavemen MCMLXIII

Another exciting Marx 6 inch figure find. And this is one is one of the best sets. I think there were 6 but only 5 here. But these are all excellent sculpts with excellent animation.
Now as for cavemen clubs has anyone ever seen a real wooden one? I don't think trees grow like that. More likely it would be a branch with a knot on the end. But they do look cool.