“… when Kane and Susan take their guests on a picnic, … a band plays, and in the background, between trees, if we look closely we can see pterodactyls, the prehistoric flying dinosaurs. The back-projection footage for these shots was borrowed from "Son of Kong" (1933).”
So, dinosaur film buffs now have one more movie to add to their “must see” list.
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And, I’m sure many people pointed out to Roger that pterodactyls are not dinosaurs.