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Re: Origin of Birds



Has anyone done any embryonic studies on the hoatzin? I wonder whether
they have anything different manus-wise, or whether the claws are
just better developed versions of regular avian digits. (Of course if
the hoatzin represents the primitve condition rather than a reversal
then it could be argued that their claws are actually under-developed
avian digits)
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        Dann Pigdon
        Melbourne, Australia

        Dinosaur Reconstructions:
        http://www.geocities.com/capecanaveral/4459/
        Australian Dinosaurs:
        http://www.alphalink.com.au/~dannj
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