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Re: Feduccia (was: polarity of bipedality in dinosaurs)
Norm King wrote:
> Of course, pterosaus have very short trunks, and the hind legs are not
> substantially involved in flight. Is there some other model for the
> ancestor of a pterosaur than a gliding quadruped? If gliding quadruped
> is the model for pterosaurs, then could that not also be a model for
As I recall, one of the big problems with the ground up theory is
that Archaeopteryx's pectoralis muscles were too weak to provide the
extra power needed for a ground take off, so it had to jump out of trees.
How valid is this, and how does the ground take off capabilities for
pterosaurs (particularly the earlier ones) compare?