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Re: "Feathery fossil shows birds aren't dinosaurs"
In a message dated 6/23/00 8:29:26 AM EST, email@example.com writes:
<< Archosauromorphs have extra cervical vertebrae over the ancestral diapsid
condition of six: most archosauromorphs have at least 8 cervicals, and some
even more. _Longisquama_ has the primitive six. George, you're not a fan
of reversals. So, did every group from trilophosaurids to rhynchosaurs to
choristoderes to pseudosuchians to pterosaurs to phytodinosaurs (I'll be
generous here) to "theropodomorphs" more advanced than _Longisquama_
indepedantly evolve 8 or more cervicals? All this just so you can keep
_Longisquama_ close to the base of theropods? >>
I don't think you can get an accurate count of the cervical vertebrae in the
specimen, because the skull seems to be pushed over the first few cervicals
and may be hiding one or more of them. However, you've seen better shots of
the specimen than I have.