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Re: Bipedal apatosaurs and stegosaurs?
Your attempt to use Diplodocus to refute bipedalism in Apatosaurus is
irrelevant, because they are different dinosaurs. Diploducus has better
developed neural control of the forelimb, and a longer neck and trunk than
Apatosaurus, so I do not speculate that diplodocines walked on two legs.
Besides, restoring CG in extinct animals is very difficult, partly because
there is no reliable means of restoring the volume of internal air-spaces, or
the flesh thickness of the tail. This is especially a problem in sauropods,
because their necks and trunk vertebrae were highly pneumatic, and much
lighter than they appear.