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Re: Why Air Sacs?
On 11/17/06, Jerry D. Harris <firstname.lastname@example.org> wrote:
A novel, and very interesting, interpretation in this remarkably comma-free
Farmer, C.G. 2006. On the origin of avian air sacs; pp. 89-106 in Milsom,
W.K., Powell, F.L., and Mitchell, G.S. (eds.), Frontiers in Comparative
Physiology. II. Respiratory Rhythm, Pattern and Responses to Environmental
Change. Respiratory Physiology & Neurobiology 154.
From a quadrupedal ancestry theropod dinosaurs evolved a bipedal posture.
Theropods evolved bipedal posture or simply inherited it from a
ancestral saurischian dinosaur which in turn inherited from a
ancestral dinosaur which in turn inherited from a ancestral
The ptero hollow bones was lined with air-sacs?