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Waterwolf | 09:56 Wed 27th Feb 2002 | Animals & Nature
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Giraffes have the same number of bones in their necks as humans, so do all animals have seven bones in their necks?
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I'm not sure about all, but certainly a good number. Phylogeny is based on skeletal variants, and the 7 neck bones, 5 toes motif is one of the larger phyla. It is eveidnec for common ancestry. I'd have to look it up but I have the feeling that sloths and monotrenes don't share this feature, and i think it is limited to mammalia.
09:16 Wed 06th Mar 2002

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