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Re: Ornithoms, Parrots, and others
In a message dated 11/12/98 8:44:18 AM EST, th81@umail.umd.edu writes:
<< A large radiation of
small, tree-climbing non-avian coelurosaurs is fully compatible with the
standard model. >>
But it isn't compatible with the "ground up" cursorial scenario of the origin
of flight. In the "ground up" scenario, birds evolve flight as ground-dwelling
animals by accumulating the anatomical features associated with flight for
non-flight reasons. They become arboreal only >after< flying makes trees
accessible. If the standard model admits tree-climbing non-avian coelurians,
then it is virtually indistinguishable from BCF, and I can get off my soapbox.