Factual error: The group finds an underground sea and there is a flock of pterosaurs flying overhead. The professor identifies the pterosaurs as the missing link between pterodactyls and archaeopteryx. This is not true as archaeopteryx (and other birds) did not descend from pterosaurs but from a branch of theropod dinosaurs.Noman
Helen: He's going to the center of the Earth. You get dizzy on the botton rung of a ladder.
Jonas Lytton: Not the bottom rung.
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