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Re: another dumb question: Terror Birds are not dinosaurs?
Oh, thank you David! THAT'S the kind of thing I really wanted to know.
We hear so much about how dinosaurs and birds share many morphological
traits, but the differences -- as you listed, of those we hear of not
On Jun 29, 2007, at 2:30 PM, David Marjanovic wrote:
what would tip you off that this thing was closer to a
chicken than to an oviraptor? The shortness of the tail?
Yes, among a long list of other things, such as (off the top of my
head) the extremely long sacrum, the modified wing, the makeup of the
palate, the way the neck vertebrae articulate with each other, the
number of neck and back vertebrae, the bone fusions in the ankle, the
proportions of the leg, the greatly reduced fibula (one of the two
bones in the lower leg), the mobile upper jaw (which is connected to
several easily visible features of the skull, such as the number of
separate holes in it), and the general lack of oviraptorosaur