 FACT: In the museum when Challenger is giving his lecture, the  camera zooms out of a carnivorous dinosaurs mouth. The dinosaur is  mounted in a horizontal, not vertical standing, which would have  been correct for the period. Also, Challenger and Summerlee comment  on the live dinosaurs on the Plateau as standing in a different way  than originally conceived. This makes no sense if they have a  skeleton set up that way in their museum.