Re: Spinosaurus sail

["Jaime A. Headden" <qilongia@yahoo.com>]

James Aronis (Apollo@MLink.net) wrote:

<Another possibility is that the lack of fused neurocentral
sutures is a display adaptation for aiding in spreading the
sail.>

  Unlike fish, *Spinosaurus* is a tetrapod and in maturity, the
neurocentral sutures actually fused. The lack of them is not a
new adaptation for the spreading of a "sail" as it infers no
flexibility. The very contacts for the vertebrae (see previous
posts by George and I) are a distinct, rugose and patterned
contact between elements that does not occur when the neural
arch has independant mobility than the centrum does.

=====
Jaime A. Headden

  Aaaaaaaaaaaaaaaaaaaahhhhhhhhhhhhhhhhhhr-gen-ti-na
  Where the Wind Comes Sweeping Down the Pampas!!!!

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