Re: The Hunchback of the Mid-Cretaceous

[Jura <archosaur@reptilis.net>]

--- "Jaime A. Headden" <qilongia@yahoo.com>
>  Suffice it to say, the very arangement of the spines, the lack
>of any distal expansion or areas for tendonous attachment
>besides the cranial and caudal sulci on the neural spines
>themselves (between the paired pre- and post- spinozygapophyseal
>laminae), suggesting the lack of a good deal of muscular support
>there. The back was probably quite rigid, in that the vertebrae
>are midly opisthocoelous to platycoelous, which restricts motion
>to some degree.

++++++++++++++++++++++++++++++++++++++

Really?

On the archives I kept getting referenced to them being strongly opisthoceolus. 
When did this end and the platycoelus replacements start?

And how likely is the hypothesis that _Spinosaurus_ could open its sail like a 
Japanese fan (though not *half* as flexible as that)?

Jura

==
The Reptipage at: http://reptilis.net

Because reptiles are just cooler.

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