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Re: Archaeopteryx with bird book, was Re: Archaeopteryx flight




----- Original Message ----- From: "Tim Williams" <twilliams_alpha@hotmail.com>
To: <dinosaur@usc.edu>
Cc: <jorgedich@yahoo.com>
Sent: Friday, October 21, 2005 3:58 PM
Subject: RE: Archaeopteryx with bird book, was Re: Archaeopteryx flight



For _Archaeopteryx_ to have its femur held near-horizontally implies a forwardly-located CM and stride generation comparable to modern birds, and I don't think there is any evidence for this.

There is some circumstantial evidence against it, in that Archaeopteryx is known to have a rather substantial tail, that acts to move the cg aftwardly, and is known to have tail feathers on that tail, capable of supporting the weight of the tail and hindlimbs in flight.
JimC